4.5-4.6 and 5.1 due Sept 21

1. The most difficult thing to understand was proofs using set products.
2. I like how things we have learned in elementary school are still being used in our class today: Commutative Laws, Associative Laws, and Distributive Laws. I love how math always builds upon itself and you need everything that you have previously learned. It isn't like you learn something and you never use it again, but you build on it and extend your knowledge on it.