Khan Academy

✦Introduction✦

It is time to unlock the potential to learn anything, with a totally free of charge.

Dedicate an afternoon to refreshing your knowledge in statistics. Explore the intricacies of the Krebs cycle. Get a jump on next semester's geometry. Prepare for your upcoming exams. Or, if you're feeling curious, delve into how fire-stick farming transforms the Australian landscape.

No matter if you're a student, teacher, homeschooler, principal, an adult returning to education after two decades, or even a friendly alien eager to grasp earthly biology—Khan Academy's personalized learning library is here for you, at no cost.

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✦ WHAT CAN YOU EXPERIENCE?... ✦

- Learn anything, for free - 

Access thousands of interactive exercises, videos, and articles right at your fingertips. Dive into subjects like math, science, economics, finance, grammar, history, government, politics, and so much more.

- Enhance your skills - 

Engage with practice exercises, quizzes, and tests that provide instant feedback and step-by-step guidance. You can follow your school curriculum or learn at your own pace.

- Resume your learning journey - 

Our mastery system is designed to adapt to your current level, offering immediate feedback and suggestions on which skills and videos to explore next. By creating a free account, your learning progress syncs with http://khanacademy.org, ensuring you stay updated across all your devices.

- Continue learning offline - 

Save and download your favorite content to enjoy videos without needing an internet connection.

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What's New in the Latest Version 8.1.1

Minor bug fixes and improvements. Install or update to the newest version to check it out!