This worksheet briefly describes some of the history of the Pythagorean theorem and then allows students to work through one of proofs. Oddly enough, this proof was actually developed by a high school student in Indiana nearly 85 years ago, so now you can motivate your student to devise their own proof! This is a great introductory activity to a unit over right triangles because it allows them to do some problem-based learning first. At the end of the activity, there are 6 questions about Pythag