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App
One Billion

Math, Age 3-5

For Students Pre-K - 1st Standards
Jump start children's math education with this fun basic skills resource. Offering dozens of different touch-and-swipe activities with colorful graphics, this program is perfect for all young learners.
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Lesson Plan
National Security Agency

Classifying Triangles

For Teachers 4th - 8th Standards
Building on young mathematicians' prior knowledge of three-sided shapes, this lesson series explores the defining characteristics of different types of triangles. Starting with a shared reading of the children's book The Greedy Triangle,...