Name________________________________________ Date _____________
Please send a letter to a student who is ill and unable to come to school. Describe all of the different towers that you have built that are three cubes tall, when you had two colors available to work with. Why were you sure that you had made every possible tower and had not left any out?
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The Towers Problem ."
Measuring Up: Prototypes for Mathematics Assessment . Washington, DC: The National Academies Press,
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