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•Cigarettes can causeyour bloodpressure tobecome higher,also making
yourheart work harder.
•A smoker’s blood may contain up to 15 percent less oxygen causing the
heartto work harder to get enough oxygen to the rest of your body.
Suggested Activities• Allow students to hold the model. Ask them what observations they can
makeabout the model and have them discuss what they already know
abouttheir heart.
• Copy and enlarge the model on page 2 as a quiz or review.
• Have students sit in a circle and start passing the two halves of the model in
oppositedirections. When one student receives both halves at once, have that
studentsay one fact about the heart or name a part of the heart. After the
factis determined to be correct, that student tosses each half to two different
studentsto start again. Remember the fact or part of the heart that was said
beforeshould not be repeated more than once!
• Have each student take their pulse to get their resting heart rate. Tell them to
placetwo fingers to their neck under their jaw and count how many times
theyfeel their heart beat in 15 seconds and then multiply by 4. (Tell them
whento start and when to stop so they only have to focus on counting.)
Havethem record their answer in a notebook. Then, instruct the students to
dojumping-jacks or a different physical activity for one-minute. After the
one-minuteis up, instruct them to take their pulse again the same way as
beforeand record that answer. Discuss the differences in the two totals and
betweenstudents. Repeat the activity with a different physical activity to see
ifthere are any changes in the findings from the first activity and then discuss
theresults.