Heart Rate and Exercise

Teach the digestive and the circulatory and respiratory sheets first so students know the organs. Then use the run sheet and the heart rate graph to show the systems acting together.

Plot sample heart rate data for a jog and a rest, then explain why the rate rose and fell. The directions on the page read: Read the note and the table. Plot each point on the grid, then connect the points with straight lines. An answer key is included.

Yes, both. We made it for 6th Grade living things, and the page works the same whether it lands on a kitchen table or a center rotation. At home, most families go through it together and talk the answers out loud, and that talking is where most of the learning happens with human body systems. In class it runs well as independent work while you pull a small group. Print one copy or thirty, whichever the day needs.

The respiratory system brings oxygen into the lungs, where it passes through tiny air sacs into the blood. The heart then pumps the oxygen-rich blood through arteries to every part of the body. Carbon dioxide travels back to the lungs to be breathed out.

Working muscles need more oxygen and energy, so the respiratory system brings in more oxygen and the circulatory system pumps it to the muscles. Heart Rate and Exercise has students graph sample data for one student, rising from 74 to 136 beats per minute and returning to 74 after rest.

On The Digestive System sheet, food passes through the mouth, esophagus, stomach, small intestine and large intestine. The liver and pancreas help digestion, but food never passes through them.