How do scientists know the difference between a meteorite from space and a regular rock from the earth? Scholars read a passage and answer comprehension questions about the creation of the solar system. They extrapolate the main ideas to...

Steel is a man-made alloy or a mixture of metals. Lesson 18 in this series of 36 focuses on metals and their extraction from Earth. Individuals read about, discuss, and answer questions after learning how people find most metals, the...

Students study the rock cycle of different types of rock. They arrange cut-outs of the parts of the rock cycle in the correct order and then draw the rock cycle or research different types of rocks.