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In this activity, learners investigate circulation and measure their own your heartbeat. A heart rate, or pulse, is the number of times the heart beats per minute.

In this activity related to the human circulatory system (on page 10 of the PDF), learners observe the dispersion of a drop of food coloring in water, draw conclusions about the movement of dissolved

In this online activity, learners measure their pulse rates and investigate how their pulses change when they engage in different activities.

During this lesson, learners will determine their blood pressure and learn about systolic and diastolic pressures.

In this activity, learners take their own pulse and explore how heart rate is affected by various activities.

Learners draw and cut out shapes of organs from construction paper. Then they attach these organs to the body of one learner to make a life-sized map of all the internal organs.

Learners will build a homemade pump using a balloon, a mason jar, and some straws.

In this activity about the heart (on page 22 of the PDF), learners examine sheep or chicken hearts to learn about the heart's structure and the flow of blood through the heart.

In this simulation activity, learners act as parts of the circulatory system and discover how it serves as a transport system for food/nutrients, oxygen, carbon dioxide and waste.

In this physical activity, groups of learners act as blood cells traveling through the circulatory system.

In this activity, learners discover how hard their hearts work to pump blood.

This experiment is designed to illustrate how fluids, including water, have the ability to flow.

In this activity on page 9 of the PDF, learners test how flavoring extracts move through the walls of a balloon.

Learners will construct a model of a heart valve using a film canister, a piece of masking tape, and a piece of paper.

In this activity about heart health (on page 34 of the PDF), learners measure their own blood pressure using an electronic blood pressure monitor with a self-inflating cuff (included in cost of materi

In this experiment, pairs of learners explore how cold water affects circulation. The mammalian diving reflex (MDR) slows circulation when the body is exposed to cold water.

In this activity, learners act out the flow of blood in the human body! A great way to get learners up and moving while learning about the circulatory system.

In this activity about heart health (on page 27 of the PDF), learners measure their heart rates after a variety of physical activities and compare the results with their resting heart rates, and with

In this activity, learners will investigate the sounds of the heart.

In this online activity, learners role-play as medics, treating a patient with missing organs. Learners select different organs, then drag them into the proper location in the patient's body.