Looks Like Pythagorus Drew It
This diagram graphically illustrates the Pythagorean Theorem and its sepia coloring looks like Pythagorus drew it himself.  It helps to illustrate why a squared + b squared = c squared.  Nicely done and a nice addition to my classroom walls as it gives students something to view and think about as they tackle another concept.  It is a nice reminder of a student's prior knowledge as they meet a new challenging concept.
Rating: 5 stars