Day 154: Colliding Bouncy Balls & Isostacy https://t.co/jcJFJ8rapH #teach180
— Marta R. Stoeckel (@MartaStoeckel) May 17, 2017
Day 154: Colliding Bouncy Balls & Isostacy https://t.co/jcJFJ8rapH #teach180
— Marta R. Stoeckel (@MartaStoeckel) May 17, 2017
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