Listen To Your Heart Beat
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Lula Carey Overton School
221 E 49th St.
Chicago IL 60615
To determine normal pulse rate
To determine factors that cause the pulse rate to change
To construct a graph to show variation in pulse rates
To construct a simple stethoscope
pumping heart paper towel tubes 10 funnels
tape recorder chart paper 4 jump ropes
exercise tape markers plastic tubing
stethoscope clay (different sizes)
scissors watch with second hand
- Have students place their right hand over heart. Describe what you feel?
Using an exercise tape or record that involves body movements, allow
students to exercise for 2-3 minutes. Describe and compare differences
in heart beats (orally).
- What is the strongest muscle in your body? Why do you think this is so?
The teacher will use a pumping heart to explain and demonstrate the
function of the heart.
- You can listen to a heartbeat, but you have to feel a pulse. Your pulse
can be converted into a visual display. Give each student some clay and
a matchstick. Roll a ball of clay about the size of a dime. Stick a
match vertically into the ball. Place it on your wrist. Shift it around
until you find the spot with the strongest beat. Describe and explain
what you see.
- Show the class a stethoscope. What is this? What is its function? Let
each child listen to his/her heartbeat. Describe what you hear. The
first stethoscope was invented in 1819. It was nothing more than a
hollow tube. Place the following items on a table: paper tubes, rubber
or plastic tubing of various sizes and shapes, different size funnels,
cut away plastic bottles, paper cups and plastic cups, clay, scissors,
tape. Give several students the opportunity to make a stethoscope
(Stethoscopes must be functional). Were some items more appropriate than
others? Why? Can you think of other items we can use?
- Divide class into groups of five.
Give each group a working stethoscope; five activity cards with the
following words: napper, jumper, walker, twister, jogger, and a watch.
- Each student will select an activity card and take turns exercising for 2
or 3 minutes. Count the heart beats for 15 seconds immediately after
exercising. Then multiply by 4 to find the beats per minute. (Be sure to
listen for the 2 part sound "lub dub" that is counted as one beat. Record
Gr. 1 2 3 4 5
- What is the hardest working muscle in your body? Why ?
- Explain how the heart functions.
- Outline the circulation of blood through the heart.
- Describe the sound of a heartbeat and explain the functions of each.
- What causes the pulse?
- Did exercise cause the pulse to increase in rate or decrease?
_ What did you learn from the data on the bar graph? How did the data
differ among the groups? Explain?
The heart is about the size of your fist. It is made of muscle.
Your heart works like a pump. You hear two sounds during every
heartbeat. Doctors call them lub-dub noises. Your pulse tells you how
fast your heart is beating. The throb you feel is the blood rushing
through the vessel with each heartbeat. During exercise your heart
beats faster. When you stop, your heart rate slows down.