Scholastic
Lesson One: The Earth, Background and Glossary
How much do you really know about our planet? Middle schoolers build up their prior knowledge about Earth, its placement in the solar system, its composition, and important geological vocabulary with an introductory earth science lesson.
It's About Time
Speedy Light
We know the speed of light, but can we measure the speed of dark? During the lesson, scholars perform gedanken, or thought experiments related to the speed of sound and the speed of light.