Why Lesson Planet?
Simple images of common activities are arrayed for primary learners to evaluate. For each, they determine whether or not the activity will increase one's heart rate. They draw a circle around those that do, a box around those that don't, and a heart around each of their favorites. For fun, teach the class how to count their heartbeats while you time them for one minute. Repeat the count after a sedentary activity and after being in motion. Use this as part of a physical education lesson or one about the cardiovascular system.