A Beating Heart Lesson Plan

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A BEATING HEART
Lesson Plan
Cube Fellow: Jason Collett
Teacher Mentor: Tara Barnett
Goal: To use cardiac physiology to increase understanding of percents and percent difference.
Grade and Course: 9th Grade, Algebra 1
KY Standards:
MA-HS-1.3.1
MA-HS-1.4.1
Objectives:
1. Students will perform a hand on experiment working as a group
2. Students will be able to collect and analyze data
3. Students will be able to calculate % difference
4. Students will be able to relate algebra concepts with basic cardiac physiology
Resources/materials needed: Worksheets, stopwatch, and a calculator
Description of Plan:
Students will have a lecture pertaining to percent and percent difference a day before this lesson
is presented. On the day of the lesson, a short and simple introduction into the efficiency and
productivity of the human heart will be given. Students will then be instructed how to estimate heart
rate by measuring an individuals pulse. Students will break into groups of two or three and provided
with a stopwatch, calculator and worksheet. First, the students will be given the fact that the average
human heart rate is 72 beats/min. The students will be asked to calculate how many times, based
upon this average, the heart will beat in 24 hours, 16 years and 100 years. Then, one group member
will be chosen as the “experimental subject”, as their heart rate will be measured. The chosen
member of the group will sit in a chair, as another takes his or her pulse, while the other monitors the
clock. A resting heart rate will be measured twice, and an average will be taken. The experimental
subject will then be asked to do 30 jumping jacks, then sit in the chair and have his or her heart rate
measured again, as before. The members will then be asked how the heart rate has changed, and to
calculate percent difference. Time permitting; each group member can obtain a resting and post-
exercise heart rate. The students will then be faced will real life examples in which heart rate may
change from rest. Students will be asked to calculate percent increase and decrease, as well as be
given percent differences and asked to calculate heart rates.
Lesson Source: Original
Instructional Mode: Interactive lecture and worksheet
Date Given: March 10, 2009
Estimated Time: 45 minute class period
Date Submitted to Algebra Cubed: 3/17/2009

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