Learn science using videos, articles, and TEKS-aligned practice exercises. Review the fundamentals of matter and energy, forces and motion, Earth's systems and processes, living organisms and …

Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a …

This course is aligned to the middle school Next Generation Science Standards (NGSS). If you’ve mastered this content and want to explore biology at the next level, we recommend our high school …

Our free, downloadable classroom activities are creative, hands-on, designed by experts, and easy for teachers to use. Best of all, they save you hours of planning time.

Oct 11, 2024 · Discover how Khan Academy’s free, downloadable high school science activities, created in partnership with the Adobe Foundation, help teachers engage students with hands-on learning …

Aug 14, 2025 · Free, high-quality science resources for grades 6–12, including hands-on activities, simulations, and teacher tools—all aligned to NGSS, TEKS, and AP standards.

Physics the study of matter, motion, energy, and force.

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Mar 4, 2025 · Engage your high school students with free, interactive biology teaching tools from Khan Academy! Explore real-world investigations, simulation-based exercises, and NGSS-aligned …