A useful free resource should help you finish a real task: choose a passage, explain a graph, plan a lesson, create a diagram, or find a credible source. This guide brings together 48 tools, libraries, and learning platforms, with the free access model, a practical first step, and a limitation for each. Start with K5 Learning for printable reading practice, Incompetech for graph paper, OpenStax for textbooks, PhET for simulations, or OBS Studio for a recorded explanation. Use the finder below to build a small collection that fits your next lesson.
Provider documentation reviewed September 26, 2026. Picks are organized by use case, not benchmark scores. Illustrations are original SVG diagrams, not product screenshots. Check current features and availability on each linked official site.
Start with what you need to make or teach.
Search by name, task, or output. These links jump to the full notes below; the complete directory remains available when filters are applied.
48 resources available
- ReadWorksText-based reading practiceFree account
- ReadTheoryAdaptive reading practiceLimited free plan
- CommonLitLiterature and nonfictionFree library; paid services
- K5 LearningElementary printable practiceFree worksheets; paid extras
- K12ReaderReading and language worksheetsFree printable resources
- Ereading WorksheetsTargeted comprehension skillsFree web resources
- ReadWriteThinkLiteracy lesson planningFree teaching resources
- StoryWeaverMultilingual storybooksFree story library
- OpenStaxFree digital textbooksFree digital; paid print
- OER CommonsDiscovering adaptable lessonsFree OER discovery
- MERLOTFinding subject-specific materialsFree discovery platform
- MIT OpenCourseWareIndependent university-level studyFree course materials
- OpenLearnShort self-paced coursesFree courses
- Khan AcademyExplanations plus skill practiceFree core learning
- CK-12Flexible digital textbooksFree learning materials
- Open Up ResourcesCoherent K–12 curriculumFree web curricula
- Desmos Graphing CalculatorGraphing equations and pointsFree calculator
- GeoGebraGeometry and linked representationsFree noncommercial use
- The Math Learning Center AppsVisual number senseFree math apps
- PolypadExploring math with manipulativesFree mathematical playground
- Math-DrillsPrintable math practiceFree worksheets
- Incompetech Graph PaperCustom printable gridsFree generators
- NCES Create a GraphSimple classroom chartsFree browser tool
- DatawrapperPublication-style chartsFree plan; paid upgrades
- PhET Interactive SimulationsExploring science through modelsFree simulations
- Concord Consortium STEM Resource FinderModel-based investigationsFree classroom resources
- NASA Learning ResourcesSpace and Earth scienceFree online materials
- HHMI BioInteractiveBiology with scientific evidenceFree teaching resources
- Smithsonian Learning LabLearning from museum collectionsFree discovery; account to curate
- Exploratorium Science SnacksHands-on science investigationsFree instructions
- Canva EducationVisual teaching materialsFree for eligible K–12 users
- Adobe Express for EducationStudent visual storytellingFree eligible education access
- PhotopeaEditing layered images in a browserFree editor; paid extras
- InkscapeScalable diagrams and artworkFree open-source software
- GIMPDetailed raster image editingFree open-source software
- AudacityRecording spoken explanationsFree open-source software
- OBS StudioScreen-based lesson recordingFree open-source software
- OpenShotEditing a short teaching videoFree open-source software
- ExcalidrawQuick explanatory sketchesFree editor; paid Plus
- draw.ioStructured diagrams and flowchartsFree diagram editor
- ZoteroOrganizing sources and citationsFree app; storage upgrades
- Directory of Open Access JournalsDiscovering open-access journalsFree discovery
- ERICEducation literature discoveryFree search; full text varies
- COREFinding open research versionsFree public discovery
- Project GutenbergClassic books for offline readingFree ebook library
- Library of Congress EducationPrimary-source learningFree online resources
- Wikimedia CommonsFinding reusable visual mediaFree media; licenses vary
- OpenverseSearching openly licensed mediaFree media search
No matching resources. Try a broader task or choose all categories.
Three small resource kits you can use together
A reading lesson
ReadWorks for a passage, ReadWriteThink for a word map, and OpenShot only if the explanation needs edited video. Begin with one passage and one evidence question.
A graphing lesson
Incompetech for paper, Desmos to check a prediction, and NCES Create a Graph for categorical data. Choose the chart type after deciding the question.
A sourced presentation
Library of Congress for primary sources, Zotero for reference notes, and Canva Education for eligible users to assemble the story. Preserve a source credit with every borrowed item.
What “free” means here: free public materials, a free software core, a limited free plan, or an eligible education offer. The comparison states which applies. The list is organized by task, not a universal ranking.
The shortlist, at a glance
| Tool | Worth considering for | Access | Format / workflow |
|---|---|---|---|
| 01. ReadWorks | Text-based reading practice | Free account | Passages and question sets |
| 02. ReadTheory | Adaptive reading practice | Limited free plan | Online quizzes and progress |
| 03. CommonLit | Literature and nonfiction | Free library; paid services | Texts and literacy lessons |
| 04. K5 Learning | Elementary printable practice | Free worksheets; paid extras | Printable worksheets |
| 05. K12Reader | Reading and language worksheets | Free printable resources | Worksheets and lesson ideas |
| 06. Ereading Worksheets | Targeted comprehension skills | Free web resources | Print and online exercises |
| 07. ReadWriteThink | Literacy lesson planning | Free teaching resources | Lesson plans and printouts |
| 08. StoryWeaver | Multilingual storybooks | Free story library | Stories, PDFs and translations |
| 09. OpenStax | Free digital textbooks | Free digital; paid print | Web textbooks and PDFs |
| 10. OER Commons | Discovering adaptable lessons | Free OER discovery | Lessons and open materials |
| 11. MERLOT | Finding subject-specific materials | Free discovery platform | Learning objects and reviews |
| 12. MIT OpenCourseWare | Independent university-level study | Free course materials | Notes, assignments and videos |
| 13. OpenLearn | Short self-paced courses | Free courses | Online study units |
| 14. Khan Academy | Explanations plus skill practice | Free core learning | Videos, articles and exercises |
| 15. CK-12 | Flexible digital textbooks | Free learning materials | FlexBooks and practice |
| 16. Open Up Resources | Coherent K–12 curriculum | Free web curricula | Math and ELA course materials |
| 17. Desmos Graphing Calculator | Graphing equations and points | Free calculator | Interactive x–y graphs |
| 18. GeoGebra | Geometry and linked representations | Free noncommercial use | Graphs and constructions |
| 19. The Math Learning Center Apps | Visual number sense | Free math apps | Manipulatives and number lines |
| 20. Polypad | Exploring math with manipulatives | Free mathematical playground | Tiles and visual models |
| 21. Math-Drills | Printable math practice | Free worksheets | Worksheets and answer keys |
| 22. Incompetech Graph Paper | Custom printable grids | Free generators | Graph paper PDF |
| 23. NCES Create a Graph | Simple classroom charts | Free browser tool | Bar, line, pie and XY charts |
| 24. Datawrapper | Publication-style charts | Free plan; paid upgrades | Charts, maps and tables |
| 25. PhET Interactive Simulations | Exploring science through models | Free simulations | Interactive science and math |
| 26. Concord Consortium STEM Resource Finder | Model-based investigations | Free classroom resources | STEM models and activities |
| 27. NASA Learning Resources | Space and Earth science | Free online materials | Activities, articles and media |
| 28. HHMI BioInteractive | Biology with scientific evidence | Free teaching resources | Videos, data and activities |
| 29. Smithsonian Learning Lab | Learning from museum collections | Free discovery; account to curate | Objects and learning collections |
| 30. Exploratorium Science Snacks | Hands-on science investigations | Free instructions | Physical experiment guides |
| 31. Canva Education | Visual teaching materials | Free for eligible K–12 users | Slides, worksheets and graphics |
| 32. Adobe Express for Education | Student visual storytelling | Free eligible education access | Graphics and short videos |
| 33. Photopea | Editing layered images in a browser | Free editor; paid extras | Layered images and exports |
| 34. Inkscape | Scalable diagrams and artwork | Free open-source software | SVG vector graphics |
| 35. GIMP | Detailed raster image editing | Free open-source software | Edited photos and illustrations |
| 36. Audacity | Recording spoken explanations | Free open-source software | Audio recordings and edits |
| 37. OBS Studio | Screen-based lesson recording | Free open-source software | Screen and audio recordings |
| 38. OpenShot | Editing a short teaching video | Free open-source software | Edited video files |
| 39. Excalidraw | Quick explanatory sketches | Free editor; paid Plus | Sketch diagrams and whiteboards |
| 40. draw.io | Structured diagrams and flowcharts | Free diagram editor | Flowcharts and concept maps |
| 41. Zotero | Organizing sources and citations | Free app; storage upgrades | Reference library and citations |
| 42. Directory of Open Access Journals | Discovering open-access journals | Free discovery | Journals and article records |
| 43. ERIC | Education literature discovery | Free search; full text varies | Research records and documents |
| 44. CORE | Finding open research versions | Free public discovery | Research records and full text |
| 45. Project Gutenberg | Classic books for offline reading | Free ebook library | EPUB, HTML and other formats |
| 46. Library of Congress Education | Primary-source learning | Free online resources | Source sets and teaching guides |
| 47. Wikimedia Commons | Finding reusable visual media | Free media; licenses vary | Images, diagrams and audio |
| 48. Openverse | Searching openly licensed media | Free media search | Image and audio discovery |
Reading, comprehension & vocabulary
PICK 01 / Text-based reading practice1. ReadWorks ↗
ReadWorks passages pair reading with questions that send learners back to the text. It is a useful starting point for building background knowledge across English, science, and social studies instead of assigning disconnected comprehension drills.
Filter by topic and grade, preview the question set, then assign or print a passage. Ask learners to identify the sentence that supports each answer.
An account is needed for classroom workflows. Its kindergarten and first-grade passages are intended for listening-level comprehension; do not assume every early-grade passage is independent decoding practice.
Reading, comprehension & vocabulary
PICK 02 / Adaptive reading practice2. ReadTheory ↗
ReadTheory adapts reading practice to learners and provides progress information. Consider it when students need different levels of practice, while keeping your own review of their written explanations alongside the platform results.
Start with the free Basic plan, try a short practice session, and discuss one incorrect answer. Check whether the available weekly quizzes fit your teaching schedule.
The pricing page currently lists one staff member, 30 students, limited weekly quizzes, and limited progress history on Basic. Unlimited practice is paid; this is not an unrestricted free subscription.
Reading, comprehension & vocabulary
PICK 03 / Literature and nonfiction3. CommonLit ↗
CommonLit brings literary and informational texts into one teaching library. It suits a lesson built around interpretation, evidence, and discussion, especially when a short text needs more context than a worksheet alone provides.
Choose a text around your lesson objective, check its reading demands, and use a discussion question before asking for a short evidence-based response.
The free library and paid school offerings are different products. Check current access for assessments, reporting, and curriculum services before planning around them.
Reading, comprehension & vocabulary
PICK 04 / Elementary printable practice4. K5 Learning ↗
K5 Learning is a practical stop for free comprehension worksheets and elementary practice. Start here for 2nd grade reading comprehension worksheets or 5th grade reading passages when a printable activity suits your lesson.
Select the grade and skill, print a sample, and check that the vocabulary and question type fit the learner. Use the answer key to plan feedback, not just mark a score.
Workbooks and membership extras can cost money. Grade labels are a starting point, so preview text difficulty rather than treating the label as a precise reading assessment.
Reading, comprehension & vocabulary
PICK 05 / Reading and language worksheets5. K12Reader ↗
K12Reader collects reading, spelling, grammar, and comprehension worksheets. It is useful for a focused practice sheet when you already know the skill you want to teach and do not need a complete learning platform.
Find one worksheet for your target skill. Complete it yourself before class, then add a short extension asking learners to explain or create an example.
Free classroom access is not permission to resell or republish a worksheet collection. Check the resource terms and retain its credit information.
Reading, comprehension & vocabulary
PICK 06 / Targeted comprehension skills6. Ereading Worksheets ↗
Ereading Worksheets organizes activities around reading skills such as inference, main idea, and text structure. It gives you a more precise starting point than searching for an undifferentiated reading comprehension test.
Choose a single skill, preview a passage, and ask learners to explain why a distractor is wrong. Compare their reasoning across two passages.
A worksheet score is evidence from one task, not a diagnosis or complete measure of reading ability. Review text suitability and on-page advertising before sharing.
Reading, comprehension & vocabulary
PICK 07 / Literacy lesson planning7. ReadWriteThink ↗
ReadWriteThink provides literacy teaching ideas and printouts supported by NCTE. Use it to connect reading, discussion, and writing, or to plan a semantic mapping activity that builds vocabulary in context.
Select a lesson for the age group, adapt the objective, and create a word map with a definition, example, related concept, and sentence from the text.
Some older interactives or linked activities may depend on technology your device no longer supports. Check the individual activity before scheduling it.
Reading, comprehension & vocabulary
PICK 08 / Multilingual storybooks8. StoryWeaver ↗
Pratham Books’ StoryWeaver offers illustrated stories in many languages. It helps families and teachers build a reading collection around language and reading level rather than relying on a single commercial textbook.
Find a short story in the learner’s language, read it together, and ask for a retelling using three events. Use the available download format for offline reading.
Books and illustrations use CC BY 4.0 with attribution requirements; readalongs and videos have different terms. Verify the specific format before adapting or republishing it.
Open textbooks, courses & curriculum
PICK 09 / Free digital textbooks9. OpenStax ↗
OpenStax publishes peer-reviewed textbooks through Rice University. It is a strong free resource for students who need sustained explanations, worked examples, and a coherent sequence rather than a collection of unrelated links.
Choose the exact title and edition, read one chapter online, and download its PDF if you need offline study. Match the chapter to your course syllabus.
Print editions and optional courseware are separate. Read the specific book license before adapting content; current licensing guidance includes noncommercial and share-alike conditions.
Open textbooks, courses & curriculum
PICK 10 / Discovering adaptable lessons10. OER Commons ↗
OER Commons helps educators discover openly licensed learning materials. Its value is the ability to look for a suitable lesson and then inspect reuse permissions, rather than assuming everything free on the internet can be edited.
Search by topic and learning level, inspect the license and creator, then adapt one activity with a clear record of your changes and attribution.
Licenses, quality, and completeness vary by item. A free-to-view resource is not automatically an open educational resource.
Open textbooks, courses & curriculum
PICK 11 / Finding subject-specific materials11. MERLOT ↗
MERLOT is a curated collection of online learning and support materials. Its discipline browsing and peer-review information are useful when you need a teaching resource outside the subjects covered by a familiar worksheet site.
Browse a discipline, read the description and any review, then open the original material. Evaluate one activity against the learning outcome you need.
MERLOT points to external materials, so access, licensing, and technical requirements must be checked at the destination. Not every listing has the same review history.
Open textbooks, courses & curriculum
PICK 12 / Independent university-level study12. MIT OpenCourseWare ↗
MIT OpenCourseWare makes course materials available for independent learning. Choose it for a structured exploration of a subject when you want assignments and lecture context, not just a quick summary or completion badge.
Check prerequisites, choose one course, and follow its syllabus. Attempt an assignment before comparing your reasoning with any provided solutions.
Material availability differs by course. OpenCourseWare does not provide enrollment, academic credit, or an MIT degree for working through the materials.
Open textbooks, courses & curriculum
PICK 13 / Short self-paced courses13. OpenLearn ↗
The Open University’s OpenLearn offers free courses and learning articles across subjects. It is a manageable entry point when you want to explore a new topic without committing to a full university syllabus.
Filter by subject and study time, work through one unit, and write a short application of the concept. Check the course page for its completion features.
A free course or participation statement is not the same as accredited university credit. Some tracking and completion features require an account.
Open textbooks, courses & curriculum
PICK 14 / Explanations plus skill practice14. Khan Academy ↗
Khan Academy combines explanations with practice in a sequenced learning environment. Use it when a student needs to revisit a prerequisite before moving on, especially in mathematics where gaps can compound.
Choose one skill related to the current lesson, review an example, and complete a few exercises. Discuss an error before assigning more questions of the same type.
Core courses and practice are free, but separate AI or institutional offerings can have different access terms. Do not assume every product carrying the brand has identical pricing.
Open textbooks, courses & curriculum
PICK 15 / Flexible digital textbooks15. CK-12 ↗
CK-12 FlexBooks are customizable digital textbooks with explanations and activities that vary by subject. They are useful when you want a chapter-based resource while retaining flexibility over which concepts to assign.
Find a FlexBook chapter, check its examples, and pair a reading section with a relevant practice activity. Keep a note of the version and link used.
Not every book includes the same simulations, videos, or assessments. Inspect each chapter and its reuse conditions rather than assuming feature parity across the library.
Open textbooks, courses & curriculum
PICK 16 / Coherent K–12 curriculum16. Open Up Resources ↗
Open Up Resources provides full course curricula on the web. It is worth considering when you need a sequence of lessons and supporting teaching materials, rather than a new worksheet for each day.
Choose the subject, grade range, and edition, then examine a complete unit. Review teacher guidance and the progression between lessons before adapting it.
Printed books, professional learning, and partner digital services can cost money. Free web curriculum access does not make every associated service free.
Math, graph paper & data visualization
PICK 17 / Graphing equations and points17. Desmos Graphing Calculator ↗
Desmos is a useful x y graph maker for exploring equations, plotting points, and comparing functions. It turns a static answer into something learners can change and inspect as coefficients vary.
Enter y = 2x + 1 and a small table of points. Change the coefficient of x, predict what will happen, and compare the prediction with the graph.
A graph is not a complete mathematical explanation. Ask learners to explain intercepts and scale, and check which calculator version is permitted in any exam.
Math, graph paper & data visualization
PICK 18 / Geometry and linked representations18. GeoGebra ↗
GeoGebra combines graphing, geometry, and other mathematical tools. It is useful when learners need to connect an equation, a geometric construction, and a visual explanation within one activity.
Create a triangle or graph a function, then move one point or change one parameter. Ask which properties stay unchanged and why.
Free use is subject to its noncommercial license. Online saving and sharing can require an account; check resource-specific terms and commercial-use conditions.
Math, graph paper & data visualization
PICK 19 / Visual number sense19. The Math Learning Center Apps ↗
The Math Learning Center offers visual tools such as fraction models, number lines, and geoboards. These visual teaching tools help make quantities and relationships visible before students move to abstract notation.
Use a number line to represent a calculation, or build the same fraction with two models. Ask learners to explain how the image matches the symbols.
These are focused manipulatives, not a full automated curriculum or gradebook. Plan the questions and feedback that make the activity instructional.
Math, graph paper & data visualization
PICK 20 / Exploring math with manipulatives20. Polypad ↗
Polypad gives learners a canvas for arranging mathematical objects and exploring patterns. Use it for visual reasoning when a conventional worksheet leaves too little room to test an idea.
Build two different representations of the same quantity or pattern. Save an explanation of the relationship so the final picture has mathematical context.
A finished arrangement can hide weak reasoning. Pair the visual with a written or spoken explanation and check saving options before the lesson ends.
Math, graph paper & data visualization
PICK 21 / Printable math practice21. Math-Drills ↗
Math-Drills offers printable practice across mathematics topics. Its coordinate activities can complement a lesson that starts with a blank Cartesian coordinate grid and moves into plotting points or graph art.
Select a skill-specific sheet, inspect its scale and instructions, and complete one example with the learner. Use a small set of questions before assigning a whole page.
Preview the worksheet and answer key. Repetition is useful only when the learner understands the underlying operation, and the site is not a personalized tutoring service.
Math, graph paper & data visualization
PICK 22 / Custom printable grids22. Incompetech Graph Paper ↗
Incompetech’s generators help when you need grid paper to print in a particular spacing or style. A graph paper PDF can serve math, drawing, measurement, or planning without requiring a paid worksheet pack.
Select the grid style and page settings, generate the sheet, and print one sample at actual size. Measure the grid spacing if physical dimensions matter.
Printer scaling and margins can change the result. A grid paper printable is a blank scaffold; you still need axes, labels, and a task appropriate to the lesson.
Math, graph paper & data visualization
PICK 23 / Simple classroom charts23. NCES Create a Graph ↗
NCES Create a Graph is a straightforward free bar graph maker with several chart types. It suits a small classroom dataset when the goal is to understand labels, scales, and the connection between numbers and a visual.
Choose a bar chart, enter category names and values, and add a descriptive title and source. Preview before printing or downloading.
The interface is older and print or download actions may need pop-ups enabled. Use non-sensitive sample data and check the exported chart for missing labels.
Math, graph paper & data visualization
PICK 24 / Publication-style charts24. Datawrapper ↗
Datawrapper is a bar chart creator and broader visualization tool for turning a small dataset into an annotated chart. It suits a class report or public explainer where the source, labels, and readable layout matter.
Prepare a clean table, choose the chart form that matches the question, then add a source note and explanatory title. Check the result at phone size.
The free plan has branding and feature boundaries. Confirm the current export and publishing terms before building a workflow that depends on a paid feature.
Science, museums & inquiry
PICK 25 / Exploring science through models25. PhET Interactive Simulations ↗
PhET provides interactive simulations that make otherwise invisible processes easier to explore. Use it to connect a prediction, a controlled change, and an observation rather than letting students click through without a question.
Choose a forces simulation. Before changing a force, sketch free body diagram examples, predict the motion, and compare the simulation with the sketch.
Simulations simplify reality. Identify what the model includes and leaves out, and check the device requirements and access to teacher materials in advance.
Science, museums & inquiry
PICK 26 / Model-based investigations26. Concord Consortium STEM Resource Finder ↗
Concord Consortium’s resource finder collects STEM activities and models. It is a useful option when a lesson needs investigation and evidence gathering instead of a single demonstration.
Choose an activity connected to the unit, identify one variable to change, and have students record a prediction and result in a small table.
Some activities need accounts or specific browser capabilities. Run the activity on the classroom device and check teacher instructions before assigning it.
Science, museums & inquiry
PICK 27 / Space and Earth science27. NASA Learning Resources ↗
NASA organizes learning resources for different audiences, bringing mission context into space and Earth science lessons. It is particularly useful for connecting a concept to an authentic scientific question or observation.
Choose a resource for the learner’s age, identify its underlying science question, and ask learners to connect the evidence to a short claim.
Materials vary in difficulty and format. Equipment-based activities may have real material costs, and individual media can carry separate credit or use requirements.
Science, museums & inquiry
PICK 28 / Biology with scientific evidence28. HHMI BioInteractive ↗
HHMI BioInteractive offers biology teaching resources built around scientific work. Consider it when you want students to interpret evidence rather than memorize a description of an experiment.
Select a resource, pause before its explanation, and ask students what the data support. Return to the evidence after watching or reading the interpretation.
Some topics assume substantial biology knowledge. Preview the educator materials and vocabulary, and distinguish observations from the explanation students infer.
Science, museums & inquiry
PICK 29 / Learning from museum collections29. Smithsonian Learning Lab ↗
Smithsonian Learning Lab connects museum resources with learning collections. It works well for an observation task where students compare objects, images, or documents and explain what they can actually infer.
Choose two related objects, list visible details, and separate observation from interpretation. Build a collection around a clear question if you need a reusable lesson.
Rights and metadata vary by object. A museum-hosted image is not automatically unrestricted, and collection context matters when interpreting an artifact.
Science, museums & inquiry
PICK 30 / Hands-on science investigations30. Exploratorium Science Snacks ↗
Science Snacks provides instructions for hands-on investigations using approachable materials. It is a useful complement to digital resources when students need to observe a physical effect directly.
Choose one activity, assemble the materials, and test the setup before class. Ask students to predict what will happen, record observations, and propose an explanation.
Free instructions do not mean zero material cost. Follow the activity’s safety directions and choose a setup appropriate to the learners and supervision available.
Creating lessons, diagrams & video
PICK 31 / Visual teaching materials31. Canva Education ↗
Canva Education brings visual design and classroom features together. It is useful for turning a lesson outline into a readable handout or slide sequence when you want templates as a starting point.
Confirm eligibility, choose a simple template, and replace decorative content with examples tied to the lesson. Test whether the text remains readable when printed.
Education access depends on eligibility and verification. Higher education and other Canva plans have different terms; access to an asset does not imply unrestricted resale rights.
Creating lessons, diagrams & video
PICK 32 / Student visual storytelling32. Adobe Express for Education ↗
Adobe Express for Education supports classroom visual projects such as posters and short explanations. It is useful when the learning outcome is communicating an idea rather than mastering a professional editing suite.
Use the appropriate school access route, choose a short format, and require a source credit on any borrowed media. Assess clarity and evidence alongside visual polish.
School administration and eligibility affect access. Check which assets, AI capabilities, and sharing features are available in the education environment you actually use.
Creating lessons, diagrams & video
PICK 33 / Editing layered images in a browser33. Photopea ↗
Photopea provides a browser-based image editor with layers and PSD support. It is useful for repairing or adapting an existing visual when a simple slide editor cannot handle the file structure.
Open a copy of the image, keep edits on separate layers, and export a web-friendly version. Retain the layered original for later changes.
The interface has a learning curve and the free experience includes advertising. Large files depend on your device’s memory and performance.
Creating lessons, diagrams & video
PICK 34 / Scalable diagrams and artwork34. Inkscape ↗
Inkscape is a vector graphics editor for diagrams, icons, and illustrations that need to stay sharp at different sizes. It suits custom vocabulary clipart or a labeled teaching diagram you expect to revise.
Draw a simple concept with shapes and labels, group related elements, and save the editable SVG before exporting a copy for a worksheet.
It requires a desktop installation and some practice with vector editing. Keep fonts and export settings consistent when sharing files with colleagues.
Creating lessons, diagrams & video
PICK 35 / Detailed raster image editing35. GIMP ↗
GIMP is a desktop image editor for tasks such as cropping, retouching, and combining raster images. It is useful when you need a reusable local editing tool for classroom assets.
Duplicate the source file, use layers for adjustments, and export a version at the size the worksheet or website needs. Preserve the editable project separately.
Detailed editing takes time to learn. Check image permissions and avoid edits that change the meaning of evidence in scientific or historical materials.
Creating lessons, diagrams & video
PICK 36 / Recording spoken explanations36. Audacity ↗
Audacity records and edits audio on a computer. It is useful for a short listening activity, pronunciation model, or spoken explanation that learners can replay without loading a video.
Record a short sample, listen with headphones, trim silence, and export an accessible audio file. Include a transcript so the explanation is available in text too.
Microphone quality and room noise affect the result. Optional services are separate from the editor, and editing cannot fully repair a poor recording.
Creating lessons, diagrams & video
PICK 37 / Screen-based lesson recording37. OBS Studio ↗
OBS Studio can record a screen, microphone, and other sources for a video tutorial. It is useful when the explanation depends on watching a process, such as graphing an equation or navigating a resource.
Build one simple scene, record a short test, and check both microphone and screen legibility. Close unrelated windows before recording the actual walkthrough.
Setup is more involved than a one-click recorder. Check audio levels and avoid capturing student names or unrelated private information on screen.
Creating lessons, diagrams & video
PICK 38 / Editing a short teaching video38. OpenShot ↗
OpenShot provides a desktop video editing workflow for arranging clips and adding simple titles. Pair it with a recorder when a lesson needs a clearer sequence or shorter explanation.
Import a recording, remove pauses and repeated steps, and add a brief title that states the learning objective. Watch the exported file before sharing it.
Rendering takes time and hardware resources. Keep the original recording, and check that text and narration stay synchronized after export.
Creating lessons, diagrams & video
PICK 39 / Quick explanatory sketches39. Excalidraw ↗
Excalidraw provides a drawing canvas for quick diagrams. It works well for a semantic map, a process explanation, or a visual comparison that benefits from a deliberately simple sketch.
Place the main concept in the center, connect related ideas with labeled arrows, and export or save the drawing with a brief written explanation.
The free editor and Excalidraw Plus have different persistence and collaboration features. Save an explicit copy of important work.
Creating lessons, diagrams & video
PICK 40 / Structured diagrams and flowcharts40. draw.io ↗
draw.io is useful when you need a tidy diagram with connectors and consistent shapes. Choose it for a decision tree, process, or classification activity that needs clearer structure than a freehand sketch.
Start with a blank diagram, assign one meaning to each shape, and label every branch. Save the editable file before exporting the diagram for a lesson.
Storage and collaboration depend on the mode or integration selected. The editor does not verify whether your diagram’s logic or subject content is correct.
Research, books & reusable media
PICK 41 / Organizing sources and citations41. Zotero ↗
Zotero helps collect, organize, annotate, and cite sources. It is a useful companion to a free resource collection because a saved link becomes easier to find when it has a title, author, topic, and note.
Create a collection for one project, save a source, and check the imported metadata. Add a note explaining what the source supports before inserting a citation.
Extra file-sync storage can cost money. Automatically imported citation details still need checking, especially dates, author names, and document types.
Research, books & reusable media
PICK 42 / Discovering open-access journals42. Directory of Open Access Journals ↗
DOAJ helps readers discover peer-reviewed open-access journals. It is a useful starting point when a lesson or research project needs scholarly material that learners can access without an institutional subscription.
Search a topic, inspect the journal and article record, and open the publisher’s page. Check the methods and publication date before using a claim.
Directory inclusion does not make every claim in every article correct. Full-text formats and reuse licenses depend on the publisher and article.
Research, books & reusable media
PICK 43 / Education literature discovery43. ERIC ↗
ERIC is an education research database that helps locate studies and reports. Use it when you want background evidence for a teaching approach rather than relying on product marketing alone.
Search a narrowly defined question, use the available peer-review or full-text filters, and read the abstract before opening the document. Record the population studied.
Not every indexed record includes free full text, and an abstract is not enough to judge an intervention. Distinguish research findings from recommendations.
Research, books & reusable media
PICK 44 / Finding open research versions44. CORE ↗
CORE aggregates research from repositories and journals. It is useful when you need to locate an accessible version of a paper or broaden a search beyond one publisher’s website.
Search the paper title or a precise topic, open the repository record, and confirm the author, year, and version. Save the source alongside your notes.
An available manuscript can differ from the final published version. Public discovery and developer or bulk-data services have different terms.
Research, books & reusable media
PICK 45 / Classic books for offline reading45. Project Gutenberg ↗
Project Gutenberg provides free ebooks with a focus on older works whose U.S. copyright has expired. It is useful for sustained reading, comparison across editions, or building an offline collection of classic texts.
Find a title, check its language and edition, and choose a format your device supports. Set a short reading goal and record unfamiliar vocabulary in context.
Copyright status varies by country, and older texts may contain dated language or ideas. Preview the edition and its suitability for the learners.
Research, books & reusable media
PICK 46 / Primary-source learning46. Library of Congress Education ↗
The Library of Congress offers classroom resources built around primary sources. It helps students practice asking who created a document, for whom, and in what context instead of treating every source as a neutral fact.
Choose a source set, have learners separate observation from inference, and compare two documents. Ask what additional evidence would help resolve a disagreement.
Item rights and contextual information differ across collections. Keep the original credit and link, and avoid presenting one artifact as a complete account of an event.
Research, books & reusable media
PICK 47 / Finding reusable visual media47. Wikimedia Commons ↗
Wikimedia Commons hosts media with public-domain or free-license information on individual file pages. It is useful for finding a diagram or photograph while keeping the creator and reuse details close to the asset.
Open the file page rather than saving a search thumbnail. Record the creator, source, license, and any attribution text before adding the media to your lesson.
A free license may require attribution or share-alike handling. Verify the individual file and do not assume that every image found elsewhere on Wikipedia has identical terms.
Research, books & reusable media
PICK 48 / Searching openly licensed media48. Openverse ↗
Openverse searches openly licensed and public-domain images and audio across sources. It is useful for widening a media search when one collection does not contain the subject or style you need.
Search a concrete subject, inspect the result’s license, and follow the source link. Keep the attribution with the downloaded asset so it survives later editing.
Openverse cautions that license metadata should be verified at the original source. A search filter is not a guarantee that all rights or permissions have been resolved.
How to choose free comprehension worksheets by learning need
For reading comprehension worksheets for 1st graders, inspect whether learners can decode the text independently or need an adult to read it aloud. K5 Learning and K12Reader provide printable practice; ReadWorks offers a different route with passages and text-dependent questions. A listening task can build comprehension, but it does not measure independent reading.
For reading comprehension in grade 4 or grade 7, begin with the skill, not just the grade label. Main idea, inference, vocabulary in context, and comparison place different demands on a reader. Preview one passage and ask for a sentence of evidence before assigning a larger set. If you are searching for reading comprehension for class 3, confirm that the provider’s grade system and curriculum match your learners.
When comparing reading programs for struggling readers, identify the actual obstacle first: recognizing words, reading fluently, understanding vocabulary, or connecting ideas. A comprehension platform can support practice, but a worksheet library alone is not a complete reading curriculum. Use student work and teacher judgment to decide the next step rather than treating an automated score as a diagnosis.
From printable coordinate plane grids to an explained graph
Start with a coordinate plane printable when the goal is understanding axes and ordered pairs. Mark the origin, label x and y, and keep equal spacing within each axis. A blank Cartesian coordinate grid is useful only when the task tells learners what the numbers and units mean.
For a first graphing example, use the points (0, 1), (1, 3), and (2, 5). Plot them on paper, predict the next point, then enter y = 2x + 1 in Desmos. This lets learners connect a table, a rule, and a graph. For virtual graph paper, choose a digital canvas such as GeoGebra or Polypad when the activity benefits from moving objects.
For categories such as books read by each class, choose a bar chart instead of connecting points with a line. NCES Create a Graph is an approachable starting point; Datawrapper suits a more polished report. Include the data source and explain what the chart cannot establish. A tall bar shows a larger value, not necessarily a cause.
Choosing the best tools for online teaching without tool overload
The best tools for online teaching solve different jobs: a source for content, an activity for practice, and a way to explain or collect work. Begin with one of each. For example, combine an OpenStax section, a PhET activity, and an OBS recording. Add another platform only when it removes a specific obstacle.
When comparing ed-tech tools for teachers, check the full route from preparation to student access. Can a learner open the material on the available device? Does the activity require an account? Is the free plan sufficient for the class? Can you keep an offline copy or provide an equivalent printable task?
Before the first lesson, try the student-facing view with non-sensitive sample content. Open the exported file on a second device if possible. Keep the original resource link, an accessible text explanation, and a fallback activity in the same lesson folder. This small rehearsal is often more useful than adding another tool to the list.
Is it free to access, free to download, or free to adapt?
These are separate questions. A free website can prohibit republishing its worksheets. An open textbook can permit adaptation with attribution and other conditions. Open-source software can be free to install while optional hosting or storage costs money. Use the access column as a starting point and inspect the individual resource’s terms before sharing an adapted version.
Keep a simple source record: title, creator, original URL, license or permission, access date, and a note of your changes. For an image, retain the file-page link as well as the image itself. Openverse and Wikimedia Commons are discovery tools; the original item page is where the reuse details need to be checked.
For a practical reuse check, imagine adding a StoryWeaver illustration to a vocabulary activity. Record its creators and license, identify which format you are using, and preserve the required credit. Do not assume the permission for a storybook also applies to a separately licensed readalong video.
Frequently asked questions
What is a free resource?
A free resource is material or a tool available without payment for a defined use. It can be a worksheet, textbook, simulation, research record, or software application. The definition does not promise unlimited access, no account requirement, or permission to redistribute the material.
Which free resources work without a student account?
Public reading and downloads from Project Gutenberg, public OpenStax textbook pages, Incompetech graph-paper generators, and basic Desmos calculator use are useful starting points. Saving progress, joining a class, or sharing work online may introduce an account requirement even when public access does not.
Where can I find free resources for teachers and students?
Start with the task: K5 Learning or ReadWorks for reading practice, Open Up Resources for curriculum, the Math Learning Center for visual math models, PhET for simulations, and the Library of Congress for primary-source lessons. The directory above separates these uses so you can compare the relevant options.
Are all 48 resources completely free?
Each has a free resource, free core product, or free eligible education option. Some sell print editions, premium features, storage, or institutional services. ReadTheory has a limited Basic plan, and Canva Education and Adobe Express education access depend on eligibility. Check the access and limitation notes for the option you choose.
Can these resources replace a complete curriculum?
Some entries provide coherent curricula or textbooks, while others support one lesson or skill. A collection of worksheets, simulations, and editing tools does not automatically form a curriculum. Check the sequence, learning objectives, assessment approach, and fit with your local requirements.
Start with the job you need to do.
Choose one task and one resource first. Preview it, check the free access and reuse terms, and try a small activity before bringing it into a full lesson. A short, maintained collection with clear sources is more useful than dozens of bookmarks you have never opened.
This is an editorial shortlist based on published product information, not a hands-on benchmark. Features and availability may change. Reference: OER Commons: the difference between free and open resources ↗