What do a raven, a bat, and a wolf have in common? Similar skeletal structures! In this Halloween worksheet, middle-grade students will explore homologous structures in different animals. 

Explore the difference between natural and artificial selection with this engaging life science worksheet for middle grades!

Explore how the fossil record is used to study the evolution of organisms in this engaging science worksheet for middle grades!

Students compare structures in the bodies of different organisms in order to draw conclusions about evolutionary relationships in this life science worksheet!