Friday, October 15, 2010

Why is a Square a Rectangle?

My daughter and I were looking at shapes counting rectangles amid a bunch of triangles and circles.  One rectangle looked a bit more like a square then the others so she didn't count it.  She said that is a square not a rectangle.  I then explained, "Actually, squares are rectangles and so you would count the squares."  My daughter lost it.  It was like I had told her that the world really is flat.  She started crying and crying out, "No, they are not!"

I was lost myself at to how to explain then I found two websites.

Geometry: Basic Ideas
Ask Dr. Math

I think she would still rather not believe it but maybe when it comes up in Math the next time she will be ready to accept it as fact.

Thursday, October 14, 2010

Saturday, October 9, 2010