B5-The students used imaginary tiles but used 100 instead of 5 cubed (125). I would have the students write down 625, 125, 25, 5, 1...as they solve the problem B6-The students started with 25 instead of goes to highest power of 5 (125) to start taking away from 342.
Subject: Numbers and Operations
Date: Sun, 5 May 2013 19:25:52 -0600
Finding the equivalent of a different base develops students' sense of numbers and operations by making them apply rules that they take for granted. Allows the use of mental math as well!
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Received on Tue May 07 2013 - 08:57:59 EDT