Students have to learn how to prove the Pythagorean Theorem to meet new Common Core standards. The usual way is to cut out squares made off of the two sides of a triangle and fit them into a larger square made on the hypotenuse.
Why not use Geometry? This fun, sometimes silly Smart Board presentation shows students how the theorem was proven by President James Garfield. Students follow along, answering questions along the way. The teacher (or a student, etc.) taps different characters along the way causing them to 'disappear', revealing the answer to the question(s) posed on that slide.
With help from former (and current!) presidents, Ben Franklin, and even Shakespeare, students are given hints to lead them to complete the proof.
Yes, I probably spent too much time on this... but I hope you can use it and enjoy it :)