Students determine the approximate time a cell spends in each phase of mitosis by counting cells in each phase from a prepared slide. They use a few simple calculations to estimate how long cells spend in each cycle in the body.

Students become familiar with common microorganisms and experience exploring the microbial world.

In this flatworm worksheet, students observe a flatworm in a petri dish. Students describe the flatwork and measure the planarian. Students complete the various charts about the movement and observations of the planarian.