Pre-Algbra 8

"The highest levels of every human activity demand a solid grasp of the basics, think of tennis or violin.  Mathematics happens to require rather a lot of basic knowledge and technique."
Ian Stewart

Proofs

"It is not enough to believe that something works, that it is a good way to proceed, or even that it is true.  We need to know why it's true.  Otherwise, we don't know anything at all."  Letters to a Young Mathematician by Ian Stewart

How many squares are in each perimeter?  

Problem of the Month:  December/January