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Challenge 9: Mirror, Mirror
Figure This!
Mirror Mirror: Does backing up show more of me?
Challenge 10: What's My Angle?
Helix Hands
What's My Angle?: Do bigger hands have larger angles?
Challenge 11: Play Ball!
Play Ball: What's round hard and sold for $3 million?
Challenge 12: Chocolate
Chocolate, Chocolate: Which cookie would you eat?
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