Students in Grade 3 learned about the multiple layers of the Earth. They are, in order from the exterior to the interior - the crust, the mantle, the outer core and the inner core. These four layers all play a part in making our world work. The crust is the thin, outer layer of the Earth where we live. The next layer is the mantle which consists of very hot and dense rock and is much thicker than the crust. The Earth's outer core is made up of iron and nickel and is very hot. The inner core is the very center and hottest part of the Earth.
Students created a 3D model of the Earth by making a planet out of Play-Doh. When they were done creating the different layers, each student cut their Earth in half to reveal it in cross-section. Students used toothpicks and a label to identify each layer.
