Math Arguments
Problems, Questions, and Puzzles to spark discussion and argument in the maths classroom.
Watermelon Water
From Richard Wiseman:
I have a 100 pound watermelon laying out in the sun. 99% of the
watermelon’s weight is water. After a few hours 98% of the watermelon’s weight is water. How much water evaporated?
The answer, slightly obscured for the sake of any who want to solve on their own, is 1100102 pounds – but can you explain why?
What other mathematical aspects of this caught your attention? What do you wonder about the situation?
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Source:
internet
More Information:
Noticing and wondering is a tool to help students:
- Understand the story, the quantities, and the relationships in the problem.
- Understand what the problem is asking and what the answer will look like. Have some ideas to begin to solve the problem.
More Here at NCTM
Noticing and wondering is a tool to help students:
- Understand the story, the quantities, and the relationships in the problem.
- Understand what the problem is asking and what the answer will look like. Have some ideas to begin to solve the problem.
More Here at NCTM
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