Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more.

Trusted content Created by experts, Khan Academy’s library of trusted practice and lessons covers math, science, and more. Always free for learners and teachers.

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.

Mar 4, 2025 · If you’re a high school science teacher looking for interactive biology teaching tools that will engage your students, Khan Academy offers a range of free resources designed to …

Make science come alive in your classroom with this free hands-on activity aligned to high school standards. You can print this activity, or assign it through a digital classroom!

This unit prepares you for the fundamental algebra skills you'll need for the SAT Math test. Work through the entire lesson for a skill, or take the quiz to cover the whole skill at once. Learn …

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 …

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, …

Explore science with Khan Academy's free courses, videos, and exercises in physics, chemistry, biology, and more for a world-class education.

ଓଃ। କିଛି ଭୁଲ ହୋଇଛି। ଦୟାକରି ଆଉଥରେ ଚେଷ୍ଟା କରନ୍ତୁ। Uh oh, it looks like we ran into an ...