Engage students by asking them to place their hand over the left side of their chest to feel their heartbeat. Discuss how this thumping is the heart at work, pumping blood throughout the body.

Explain the components of the circulatory system, including the heart, blood vessels, and blood. Highlight the heart's role as a muscular organ that pumps blood.

Differentiate between arteries and veins, explaining their functions and the type of blood they carry.

Watch the video 'Your Heart and Blood' to understand how the heart and blood vessels work together to circulate blood. This video provides clear explanations and engaging demonstrations.

Discuss the process of carbon dioxide removal by the circulatory system through the lungs.

Conduct a simple experiment where students measure their pulse rate before and after physical activity, such as jumping jacks, to observe changes in heart rate.

Assign the 'Human Body Organs' assessment, where students identify and describe the function of each organ. This helps reinforce their understanding of the circulatory system's role within the body.

Use the 'The Circulatory System' assessment to evaluate students' comprehension of the main parts and functions of the circulatory system. This includes fill-in-the-blank questions and diagram labeling.

Facilitate a class discussion to review the key concepts of the circulatory system, encouraging students to share what they have learned about the heart, blood vessels, and blood.

Encourage students to take the Unit Quiz to test their comprehension of the circulatory system and its functions.

For further exploration, students can watch the 'All About Your Body' video to gain a broader understanding of how the circulatory system interacts with other body systems.