Long ago, there was a farmer whose land was in the shape of a square. Each side of the square was exactly one hundred paces long. One day, a tired, dusty man knocked on the farmer's door and asked...
Counting triangles
The design shown above is made entirely of triangles. How many triangles, of all sizes, do you think there are? Altogether, there are 88 triangles! See if you can find them all. There are 42...
The Three Bears
an English folk tale Once upon a time there were three Bears who lived in a little house in the woods. There was a Great Big Father Bear with a great big voice, and a Middle-Sized Mother Bear with a...