Elephant has a bucket of blocks and wants to build something tall. Something as tall as Elephant. But will it stay up? CRASH! BOOM! Not this time. Build it again? One block. Two blocks? Four blocks? It’s still not as tall as Elephant. More blocks! Now will it stay up? Now will it be as tall as Elephant? Build, balance, count β€” question, estimate, measure β€” predict, crash, and build again!

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