Natural Selection in Goldfish - Scientific Method lab

This is a really fun and easy to do lab that is a great way to start off the year or to review the fundamentals of the scientific method. Students are given a problem, have to develop a hypothesis regarding the natural selection of gold fish. (the edible kind). They have to collect the data, graph the data (which the graph is included) and analyze the data with questions regarding natural selection. The kids always have fun with this lab!