by Katie Durgin-Bruce, M.S.
In this unit you will explore the part of the planet right under your feet (and quite a bit below). You'll learn about the soil in your state and investigate rocks in your area.
You'll also explore how the slowly moving plates that make up the Earth's crust interact with one another to form mountains, cause volcanic activity, and trigger earthquakes.
This package includes free online curriculum access for 18 months.