Grade 5

Encourage students to consider what Winn’s spinner might look like, and whether such a spinner is actually possible.

Winn plans to design a spinner with 4 different color sections. She wants it to land on red the time, on blue of the time, on green of the time, and on yellow of the time.

- It’s impossible to design a spinner like that. The fractions add up to more than 1.
- It would work, for example, if you changed the fraction of the time that the spinner lands on blue to . Then the fractions would add to 1: + + + .

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