In this geometry worksheet, 10th graders use right triangle trigonometry to solve problems involving angle of elevation or depression. The one page worksheet contains eleven problems. Answers are not provided. 

In this Earth's shape worksheet, learners read an article about a gentleman who believes the Earth is flat. Then students complete 5 short answer questions.

In this moon learning exercise, students review the Clementine exploration of the Earth's moon. This learning exercise has 8 matching and 14 true or false questions.