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Basic Geometry - Khan Academy

Khan Academy

Learn how to calculate the perimeter of various shapes in this introductory lesson on perimeter.

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2024年10月1日 · Little learners from preschool through 2nd grade can have fun learning with free Halloween-themed activities from Khan Academy Kids. Themes are a great way to engage learners, and what better way to capture attention than by trick, treat, and learning?

Energy Points basically mean how much you learn, which can be used in the store. The store should have stuff like avatars, backgrounds or even like you can use your energy points to play games. Like 1000 energy points for 2 minutes of game time.

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खान अकेडमी - Khan Academy

Aprende conteúdos de Matemática, Informática, Economia, Física, Química, Biologia, Medicina, Finanças, História e muito mais. A Khan Academy é uma organização sem fins lucrativos com a missão de proporcionar uma educação gratuita e rigorosa para todos, estejam onde estiverem.