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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. It’s all free for learners and teachers.
Learn high school biology using videos, articles, and NGSS-aligned practice. Explore the fundamentals of cells, organism growth and development, photosynthesis and cellular respiration, molecular and classical genetics, natural selection and evolution, biodiversity and human impacts, and ecology.
SAT practice on Khan Academy is world-class SAT prep that’s effective and 100% free. Encourage your teen to get a head start and practice today!
Inspire a lifetime of learning with our educational app for kids ages 2-7. Kids can learn reading, writing, math, counting, ABCs, addition, subtraction, social-emotional skills, & more. 100% free on iPhone, iPad, Android, and Amazon.
Students will still be able to use Khan Academy to prepare for the new Digital SAT through our two Official Digital SAT Prep courses (Math and Reading and Writing). These courses will allow students to: Read articles, watch videos, and work on thousands of practice exercises for every skill evaluated in the tests.
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Sign up. Our mission is to provide a free, world-class education to anyone, anywhere. Khan Academy is a 501 (c) (3) nonprofit organization. Donate or volunteer today! About. News.
Log in. Our mission is to provide a free, world-class education to anyone, anywhere. Khan Academy is a 501 (c) (3) nonprofit organization. Donate or volunteer today!
Khan Academy’s practice questions are 100% free—with no ads or subscriptions. What do Khan Academy’s interactive math worksheets cover? Our 100,000+ practice questions cover every math topic from arithmetic to calculus, as well as ELA, Science, Social Studies, and more.
World history | Arts and humanities | Khan Academy. World history 6 units · 92 skills. Unit 1 Beginnings - 600 BCE. Unit 2 600 BCE - 600 CE Second-Wave Civilizations. Unit 3 600 - 1450 Regional and interregional interactions. Unit 4 1450 - 1750 Renaissance and Reformation. Unit 5 1750 -1900 Enlightenment and Revolution. Unit 6 The 20th century.