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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.

Learn physics using videos, articles, and NGSS-aligned practice exercises. Explore the fundamentals of motion and forces, non-contact interactions, energy, and waves.

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 …

Unit 8 Acids, bases, and solutions Unit 9 Redox reactions and electrochemistry Unit 10 Kinetics Science

Jul 30, 2025 · Discover Khan Academy’s free, TEKS-aligned 8th-Grade Integrated Science course featuring real-world lessons, hands-on activities, and engaging practice to prepare students for high …

Mar 4, 2025 · Our interactive activities are inspired by real-world biological phenomena. They’re designed to help students investigate, model, and analyze data while encouraging curiosity and …

Aug 6, 2024 · Our new high school science courses are aligned to the Next Generation Science Standards (NGSS) and include a rich set of learning resources, including brand-new videos, articles, …

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