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Use groups of 4.
Materials: Number cube, spinner, notebook paper
What's the Problem?

Make the spinner shown.

Figure

Begin by rolling the number cube and spinning the spinner to get a ratio. Use the number from the cube as your numerator value and the number from the spinner as your denominator value. Record this ratio.

Write a word problem that uses this ratio to set up a proportion. On a separate sheet of paper, write the solution to the problem, showing all steps. Continue until you have 4 different word problems. Groups should then trade problem sets, solve, and compare their answers to those supplied by the authors.