Fifth graders are fundamentally interested in categorizing, seriation, and ordering, as well as in collections and their organization. Exactness and organization are fifth graders' strengths. This is a prime time to teach about biological classification and simple genetics. At this age, the use of scientific tools (balances, microscopes) can be successfully introduced. In addition, students can begin to understand the value of repeating experiments, isolating variables, and using multiple attributes to describe phenomena. Teachers can leverage fifth graders' enjoyment of memorization by selecting facts for study that can be applied to broader understandings. Students should be given numerous opportunities to apply this knowledge to solve problems.