Math & Science
Open textbooks for math, physics, chemistry and biology.
We do not host these materials. All rights belong to the respective authors and publishers — these are links to official third-party sources. If you are a rights holder and want a link removed, contact us.
22 resources
OpenStax — Mathematics
Free peer-reviewed textbooks: algebra, precalculus, statistics and calculus.
OpenStax — Science
Open textbooks for physics, chemistry, biology and astronomy.
LibreTexts
The largest open library of university textbooks across disciplines.
MIT OpenCourseWare
Free MIT course materials: lectures, notes and problem sets.
CK-12 Foundation
Free interactive FlexBook textbooks for math and science.
Scientix — STEM-ресурси для ЄС
European community for STEM education: resources and projects.
Siyavula — Open textbooks
Free open textbooks for mathematics and physical sciences.
PhET Interactive Simulations
Free interactive simulations for physics, chemistry, biology and math.
GeoGebra
Free tools and materials for geometry, algebra and calculus.
Desmos
Free graphing calculator and math classroom activities.
Wolfram MathWorld
Free online mathematics encyclopedia.
Art of Problem Solving
Free competition-math resources and the Alcumus practice tool.
Mathigon
Free interactive math textbook with step-by-step explanations.
Illustrative Mathematics
Free open K-12 problem-based mathematics curriculum.
OpenSciEd
Free open science curriculum for middle and high school.
NRICH (University of Cambridge)
Free rich mathematics problems and resources for deeper thinking.
STEM Learning
Free resources for science, technology, engineering and mathematics.
TVO Learn Mathify
Free 1:1 online math tutoring for Ontario students (grades 4-12).
mathies
Free interactive math tools and games aligned with the Ontario curriculum.
Let's Talk Science
Free bilingual, curriculum-aligned STEM resources for K-12.
Go-Lab (Golabz)
Free online science labs and inquiry-based learning activities.
Мала академія наук України
State science programs, olympiads and materials for student research.