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Popular Courses

Math: Pre-K - 8th grade

Build foundational skills and conceptual knowledge with this beloved math course.

150 lessons 4.8

Science

Explore biology, chemistry, physics, and more with engaging videos and exercises.

95 lessons 4.7

Arts & Humanities

Explore art history, music, and philosophy through interactive content.

120 lessons 4.9

Why Khan Academy Works

Personalized learning

Students practice at their own pace, first filling in gaps in their understanding and then accelerating their learning.

Trusted content

Created by experts, Khan Academy's library of trusted practice and lessons covers math, science, and more.

Tools to empower teachers

With Khan Academy, teachers can identify gaps in their students' understanding and tailor instruction accordingly.