Young scientists discover the importance of scientific investigation by observing live crayfish. They carefully observe the patterns of crayfish in different environments. Then they discuss their conclusions and define what all living...

Students investigate the external anatomy of a crayfish. In this arthropod lesson plan, students study the structures of the head, the body and the appendages of a crayfish. They locate specific structures present in arthropods and...

In this lab experiment site, you will "Observe the external and internal anatomy of a crayfish, determine the sex of a crayfish using external anatomy, and collect statistical data on crayfish length and cheliped length."