American Museum of Natural History
The Milky Way Galaxy
Just how big is the galaxy? Learners read information about the size of the Milky Way galaxy to better comprehend its size. Pupils develop an understanding of the number of stars in the galaxy by finding just how big a billion is and...
Curated OER
Galaxies
Tenth graders explore the structure and content of galaxies. Through discussion, lab, and hands-on activities, they discover the general structure of the three types of galaxies as well as the effect they have on the structure and...