I work at having my students recognize and appreciate contrast. Teaching geometry through poetry? Yes, it works, it reinforces concepts, and it's fun. Here's an example of one I personally penned. Symmetry: Symmetry, hey symmetry,/ find the line that divides/ the reflective beauty/ in both you and me.// We each have a side left./ We each have a side right./ We use symmetrical eyes/ to give us clearer sight.// We stroll with symmetrical legs/ that stand on either side/ Or help us pedal bike pedals/ when we choose to ride./ We are blessed with a left hand/ and one that's symmetrical right/ that keeps us balanced at the desk/ when we're asked to write.// Now our nose is in the middle,/ smack dab on symmetry,/ but it has two holy nostrils/ for blowing after a sneeze.// Sweet symmetry gives form to me./ I can run a straight line in track,/ but ours is between side to side/ and not measured front to back.// Symmetry, hey symmetry,/ find the line that divides/ the reflective beauty/ in both you and me.