Instructional Objectives: The student will identify features of the circulatory system. Explore the needs of the human body by explaining the importance of good health in relationship to the body. Understand the functions and care of the human body and its organs.
Materials: Heart visual aid; circulatory system visual aid ,Stopwatch ,Scrap paper, cut into half sheets, Rope, clothespins, index cards, Construction paper, scissors, glue and crayons.
Instructional Strategies: 1) The teacher will introduce the circulatory system. Begin discussion about the heart. Review that the heart is one of the involuntary muscles discussed in the last class. 2) The teacher will hand out a piece of scrap paper to each student. The student will crumple it into a ball and hold it in his hand. The teacher will watch the clock and count to 90 in one minute. The teacher will instruct the students to squeeze the paper ball each time a number is said. This demonstrates how strong the heart is and how hard it works. 3) Begin discussion covering the following information: The heart is a hollow muscle that has 2 pumps. The beating sound is made by the valves closing as the heart allows blood to pass in and out of the chambers. Use a visual aid (chart) to show students how blood passes through the right side of the heart, to the lungs, to the left side of the heart and out to the body. The teacher will present information about veins and arteries. 4) The teacher will show students where they can locate their pulse (neck or wrist) as they stand beside their desks. 5) The students will run in place for one minute. 6) The teacher will have the students stop running and feel their pulses. The students will describe how their pulses feel. 7) The teacher and the students will brainstorm ideas on keeping hearts healthy. 8) Using a rope tied to 2 stationary objects in the front of the classroom, the teacher will hand out index cards to student volunteers, programmed with the sequence of steps describing the blood’s passage through the heart (one step per card). The students will attach their card to the rope with a clothespin. 9) When all the students have finished placing their cards, the teacher will check the order. The students will read the card they hung aloud to the class. The student will work independently to sequence the order of the blood flow process.