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Ages 14-18
AP®︎/College Biology
Learn AP Biology using videos, articles, and AP-aligned multiple choice question practice. Review the fundame…
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Science
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Science (18)
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Ages 14-18
AP®︎/College Chemistry
Learn AP Chemistry using videos, articles, and AP-aligned practice. Review the fundamentals of atomic structu…
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Ages 14-18
AP®︎/College Environmental science
Learn AP Environmental Science using videos, and AP-aligned practice. Review the fundamentals of ecosystems, …
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Ages 14-18
AP®︎/College Physics 1
AP Physics 1 is an algebra-based, introductory college-level mechanics course. In this course you'll explore …
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Ages 14-18
AP®︎/College Physics 2
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Ages 14-18
AP®︎/College Physics C: Mechanics
AP Physics C: Mechanics is an calculus-based, introductory college-level physics course. In this course you'l…
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Ages 14-18
Cosmology and astronomy
It's a great, big universe out there. In this section of Khan Academy, you'll learn about the brain-bending v…
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Ages 14-18
Electrical engineering
Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get…
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Ages 14-18
Hands-on science activities
Make science come alive with these free hands-on activities aligned to middle and high school standards.
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Ages 14-18
High school biology
Learn high school biology using videos, articles, and NGSS-aligned practice. Explore the fundamentals of cell…
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Ages 14-18
High school chemistry
Learn high school chemistry using videos, articles, and NGSS-aligned practice. Explore the fundamentals of at…
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Ages 14-18
High school physics
Explore the behavior of the universe including forces and motion, energy, electromagnetism, and light. Explai…
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Ages 14-18
Middle school Earth and space science
Learn Earth and space science using videos, articles, and NGSS-aligned practice. Review the fundamentals of s…
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Ages 14-18
Middle school biology
Learn biology using videos, articles, and NGSS-aligned practice. Review the fundamentals of cell biology, org…
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Ages 14-18
Middle school chemistry
Learn chemistry using videos, articles, and NGSS-aligned practice exercises. Explore the world of elements, c…
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Ages 14-18
Middle school physics
Learn physics using videos, articles, and NGSS-aligned practice exercises. Explore the fundamentals of motion…
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Ages 14-18
Organic chemistry
Sal and Jay cover topics covered in college organic chemistry course. Basic understanding of basic high scho…
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Ages 14-18
Teacher resources (NGSS)
Make science meaningful in your classroom with Khan Academy's free unit guides and hands-on activities aligne…