Use this engaging worksheet to introduce students to the geologic time scale and the pieces of evidence scientists use to determine Earth’s history!

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

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

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.