Interactive Learning Tools
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Open textbooks and adaptive homework tools for educators.
Open educational resources & free learning platformsLibreTexts is a nonprofit platform for finding, adapting, and publishing open educational materials. It hosts subject-based textbook libraries, supports remixing chapters into custom course texts, and connects those materials with interactive elements such as homework questions, notebooks, videos, and visualizations.
0 votesVisit siteGamified language lessons that make daily practice easy to keep.
Open educational resources & free learning platformsDuolingo offers bite-sized lessons for learning languages through a game-like practice routine. Learners can study on the web or mobile apps, track streaks and progress, and move through structured exercises covering vocabulary, listening, reading, and basic grammar.
0 votesVisit siteInteractive math calculators, activities, and classroom tools in one place.
Open educational resources & free learning platformsGeoGebra provides free digital math tools for graphing, geometry, 3D visualization, scientific calculation, notes, and classroom activities. The site also hosts curated math resources for grades 4–12, live lesson participation, teacher collaboration features, and a photo-based math solver with explanations.
0 votesVisit siteFree Harvard-backed science lessons, simulations, and virtual labs.
Open educational resources & free learning platformsLabXchange is a web-based science education platform from Harvard University offering free learning materials for students and educators. It focuses on digital science instruction, including lesson resources and interactive activities that can support classroom, remote, or self-guided study.
0 votesVisit siteSpaced-repetition flashcards for everything from facts to huge decks.
Open educational resources & free learning platformsAnki is an open-source flashcard app built around spaced repetition, scheduling reviews based on how well you remember each card. It supports rich card content, syncing through AnkiWeb, custom review settings, shared decks, and add-ons for extending the app beyond basic flashcards.
0 votesVisit siteInteractive STEM lessons that teach through guided problem solving.
Open educational resources & free learning platformsBrilliant is an online learning platform for math, computer science, science, data analysis, and AI topics. It emphasizes visual, step-by-step problem solving, with an AI tutor named Koji that adjusts practice based on what a learner has mastered or is struggling with.
0 votesVisit siteFree browser calculators for graphing, geometry, science, and 3D math.
Open educational resources & free learning platformsDesmos provides a suite of free online math calculators, including graphing, scientific, 3D, and geometry tools. It is widely used in classrooms and by independent learners to explore equations, visualize mathematical ideas, and build interactive examples.
0 votesVisit siteFree coding lessons with projects, certifications, and community support.
Open educational resources & free learning platformsfreeCodeCamp is a nonprofit learning platform for people building practical programming and web-development skills. It combines self-paced lessons, coding challenges, portfolio projects, and free certifications, with supporting articles, videos, and a large learner community.
0 votesVisit siteResearch-backed interactive courseware from Carnegie Mellon.
Open educational resources & free learning platformsOpen Learning Initiative is Carnegie Mellon’s platform for research-informed online courses, interactive practice, and teaching tools. Educators can adopt existing course materials, customize or build content in Torus, and use learning data to identify where students need support.
0 votesVisit siteFree interactive lessons and practice for school subjects and test prep.
Open educational resources & free learning platformsKhan Academy is a nonprofit learning platform with instructional videos, articles, and practice exercises across math, science, computing, economics, humanities, and test preparation. Learners can work through courses at their own pace, while teachers and parents can assign material and monitor progress.
0 votesVisit siteA social language-exchange app for practicing with native speakers.
Open educational resources & free learning platformsHelloTalk connects language learners with native speakers around the world for informal practice through messaging, calls, community posts, and live audio spaces. The app supports a large range of languages and includes conversation aids such as translation, pronunciation help, transliteration, and corrections.
0 votesVisit siteInteractive STEM simulations from the University of Colorado Boulder.
Open educational resources & free learning platformsPhET provides browser-based simulations for physics, chemistry, biology, earth and space science, and math. The site is aimed at classroom and self-directed learning, with teacher activities, translations, accessibility work, and professional-learning materials around its simulation library.
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