Students learn about digestive system problems and how to prevent them. The perspective builds a foundation for future decision making. By the end of fourth grade, students will develop an understanding of personal health. Students construct a paper digestive system. Students determine their smell threshold using different concentrations of mint extract.
Students compare the endurance and strength of the heart with their hand and arm muscles.
Students find their resting heart rate, then squeeze a ball to simulate the beating of their heart. Students find that their heart must work hard to maintain even a resting heart rate. Students will complete Lab Manual pages 75- 76 as they do the activity. Students conduct a survey to determine how frequently their classmates wear bicycle helmets. Students use the data to prepare a bar graph and make an inference about the safety attitudes of the students who were surveyed.