Circles Radius Diameter & Pi Song – Learn Geometry – Learning Upgrade App

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Learning Upgrade is a learning app for everyone!


Have Fun Learning
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Our courses are available on iOS, Android, and via the web. Complete lessons anywhere and switch easily from phone to tablet to computer.

Learn Your Way
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Math Upgrade and English Upgrade Features
600+ lessons cover what you need to learn
Songs, video, and games in each lesson
Proven effective with over 1 million students
Self-paced courses adapt to each student’s needs
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Learn the fun way: get our app!
iOS: https://goo.gl/Zchxux and Android: https://goo.gl/YohfVr