In this crayfish dissection worksheet, students answer 11 questions about crayfish bodies. One question requires students to label all the parts of a crayfish body.

Students dissect organisms and take photographs to create a PowerPoint dissection library. In this anatomy lesson, students dissect organisms that interest them and photograph the process while identifying structures. They create a...

Comparative anatomy prevails in the lesson exploring diversity among invertebrates. Biologists examine physical characteristics of an earthworm from phylum annelida and a meal worm from phylum insecta. They also inspect a cricket and a...

Students observe different animals with bilateral symmetry. In this biology instructional activity, students compare how these animals move. They discuss the evolutionary history of observed animals.

A collection of lesson plans, quizzes, and educational videos developed for online dissections. The site hopes to improve the learning experience for students, and increase the quality of the dissection experience. Organisms included are...

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."