Reading this for my own personal interests was really interesting and intriguing. I really enjoyed going into the depth at a higher level of understanding of different aspects of evolution from prehistoric times to modern technologies. My thought as an upper elementary teacher is that there is specific standards written for 3rd grade when it comes to evolution but nothing in 4th and 5th, also teaching 6th grade I know that there is very little that is considered an evolutionary based standard. The thing that got me thinking about how I could apply this to my current situation is those benchmark ideas such as "by the end of grade 5 Sometimes the differences in characteristics between individuals of the same species provide advantages in surviving, finding mates, and reproducing. Having these statements gives me a better understanding of how we could apply the evolutionary standards into grade levels that don't necessarily have an abundance of these specific standards.