Begin the lesson with an engaging discussion about the importance of the heart and blood vessels in our daily lives. Ask students to feel their pulse and think about how their heart is working even when they're not aware of it.

Introduce the topic with the video 'Your Heart and Blood', which explains the circulatory system and the role of the heart and blood vessels. This video provides a clear and engaging overview that will help students visualize the concepts.

Explain the function of the heart in the circulatory system, emphasizing how it pumps blood throughout the body. Use diagrams to show the heart's structure and how blood flows through it.

Discuss how blood travels through the body using arteries and veins. Highlight the differences between these two types of blood vessels and their roles in the circulatory system.

Watch the video 'All About Your Body' to explore how the circulatory system interacts with other body systems. This video helps students understand the interconnectedness of body systems and their functions.

Engage students in a discussion about how the heart and blood vessels work with other systems to carry out life processes. Encourage them to think about how exercise affects their heart rate and overall health.

Conduct the 'What’s Your Pulse Rate?' activity, where students measure their pulse after different physical activities. This hands-on activity helps students understand how exercise impacts heart rate.

Assign the 'What’s Inside Your Body?' worksheet, where students label parts of the body, including the heart and blood vessels. This activity reinforces their understanding of human anatomy.

Review key concepts with students by asking them to explain how the heart and blood vessels work together in the circulatory system. Use questioning to assess their understanding and clarify any misconceptions.

Have students reflect on what they learned about the circulatory system and its importance to overall health. Encourage them to share any new insights or questions they have.

Administer the 'Review – Healthy Body' assessment to evaluate students' comprehension of the circulatory system and related health concepts. This assessment includes true or false questions and open-ended responses.

For further exploration, encourage students to research how lifestyle choices such as diet and exercise impact heart health. They can present their findings in a short report or presentation.