Start a 10-Day Free Trial to Unlock the Full Review
Why Lesson Planet?
Find quality lesson planning resources, fast!
Share & remix collections to collaborate.
Organize your curriculum with collections. Easy!
Have time to be more creative & energetic with your students!
Students study the Curtis- Shapley debate which highlighted the view of human place in the universe. They examine the clash of these two astronomers in a debate which took place in 1920.
4 Views 7 Downloads