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Topic: How I used "Teresa's Tiles" [FunPoW]
Replies: 0

 Chris Posts: 1 Registered: 12/3/04
How I used "Teresa's Tiles" [FunPoW]
Posted: Apr 28, 2003 5:41 AM

I thought this was a great problem and wanted to share with you how I
used it. I believe that the array model of multiplication and the
partializing of a large array into smaller ones made up of multiples
of tens is a very powerful model for kids learning about
multiplication. For example, to solve the problem 24 X 8, you could
subdivide the problem like this:

(10 X 8) + (10 X 8) + (5 X 8)

or

(20 X 8) + (5 X 8)

So, we did just this when figuring the area of Teresa's bathroom. It
provided a great visual model for the kids to see how the sum of the
parts equal the whole in multiplication. This is a natural strategy to
use especially when finding the area of irregular polygons, which
rooms so often are.