This week we didn't have school on Monday, so we had a four day week. On Tuesday we watched the movie "Miracle of Life" and witnessed child birth. From the movie I also learned how the process of fertilization occurred. The sperm contain an enzyme in their head that allows them to enter the eggs wall. Once the sperm enters the egg, the egg sends a signal though out itself that doesn't allow anymore sperm to enter it. I thought that was pretty interesting.