Soak It Up
Number Sense/Computation
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Objective
Students will compare three products to determine the best value by using problem
solving strategies, reasoning, communications, and making connections.
Students will determine the surface area of a region.
Overview of the Lesson
Students are engaged in a role playing activity where they assume the role of
business executives who must decide which of three prototypes of paper towels
would be the best buy for consumers. They use problem solving strategies to find
the best value in terms of cost and then conduct experiments to test the absorbency
of the three prototypes. In their testing procedures they find the surface area of the
stain as they drop water into the center of a paper towel and then use a transparent
grid to measure the area of the stain. Students then analyze the results of their
absorbency test and the cost factors to determine which towel is the best value.
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