Is There a Tenth Planet?

In this planets instructional activity, students read about how our solar system's planets were discovered and how scientist believe there might be a tenth planet. After reading, students complete 4 short answer questions.

5th - 12th Science 7 Views 66 Downloads
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Damian J.
Lesson Planet is a very useful resource that saves a lot of time planning at night. Lots of unique creative lesson ideas that have been a life saver.
Damian J., Teacher