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Challenge 1: Line Up!
Line Up: How long would you have to wait in line if you were number 300?
Challenge 2: Beating Heart
Beating Heart: How fast does your heart beat?
Challenge 3: Popcorn
Popcorn: Which shape holds the most?
Manhole Guy
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Challenge 4: Don't Fall In
Don't Fall In!: Why are most manhole covers round? Cargue Retos Matematicos la version PDF Espanola.
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