Circulatory System Experiments:In the first activity, students will check their pulse after doing a variety of activities such as jogging in place, resting, jumping jacks, etc. Students will fill in a data table to record their results. In the second activity, students will make a model of the heart with a beaker, straws, a balloon, and water. There are a few questions for students to answer after each investigation. Both of these investigations will take students through the scientific meth