Inquiry Maths is a model of teaching that encourages students to regulate their own activity while exploring a mathematical statement (called a prompt). The website has resources for secondary school teachers.
This set of 36 printable Multi-Match cards will help students find the distance between two points on a grid with the Pythagorean Theorem (CCSS Students will also learn 8 sets of Pythagorean triples. Just print cards on plain paper, cut, and play!
Years ago, a man named found an amazing fact about If the triangle had a right and you made a square on each of the three sides, then the biggest square had the exact same area as the other two put together!