Let's Do Math!
 

Advice from the teacher:

To help count the squares, take square grid paper. Cut out a square that is 8 by 8, just like the checkerboard. Then cut out another square that is 7 by 7. Now slide the 7-by-7 square over the 8-by-8 square to help you see how many 7-by-7 squares that there are. See below how it is done.

Or do it online with JAVA.


The 7-by-7 Squares

 


Now cut a 6-by-6 square, and slide it over the 8-by-8 to help you count. Then try the 5-by-5, etc. Also, look for a pattern.


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Copyright 2000-2008 Cynthia Lanius