Math-in-CTE Lesson Plan Template
Lesson Title: CPR
Lesson #5
Author(s):
Andrea Gelvin
Phone Number(s):
907-479-2261 x137
E-mail Address(es):
Andrea.gelvin@k12northstar.org
Amy Brown
907-479-2261 x139
Amy.brown@k12northstar.org
Occupational Area: Health Science
CTE Concept(s): CPR
Math Concepts: Ratio, rate
Lesson Objective:
Understand the rates and ratios of CPR
Supplies Needed:
CPR mannequins, American Heart Association Skill sheet, American Heart Association CPR video
THE "7 ELEMENTS"
TEACHER NOTES
(and answer key)
1. Introduce the CTE lesson.
The hook: play video of toddlers attempting CPR.
http://www.youtube.com/watch?v=PHQdi5P5BgA
Ask students why the video is so funny, would they consider it funny to Begin the idea that there is a correct way to perform CPR
see an adult performing CPR on a real person in this way.
This lesson should be taught right after the introductory lesson on
compressions.
2. Assess students’ math awareness as it relates to the CTE
lesson.
Questions:
What is a ratio?
Ratio: a comparison of two quantities by division
Examples: teachers to students: 1 to 25 ; 1:25 ;
1
25
Boys to girls at birth: 102 to 100 ; 102:100 ;
can be reduced to
What is a rate?
Determine the ratio of boys to girls in your class.
102
which
100
51
50
Rate: a comparison by a ratio of two different units
Examples: Miles per hour, Dollars per pound (unit price), Miles per
gallon, dollars per hour
Each student checks their own pulse rate (beats per minute)
3. Work through the math example embedded in the CTE lesson.
The ratio of 30 compressions : 2 breaths breaks the rhythm of CPR
much like a stoplight interrupts the driving rate (speed) on your way
All CPR compression rates should be 100 compressions per minute.
to school.
However, confusion arises when breaths replace the compression
beats. The rate is not continuous.
Example: When performing CPR you do 30 compressions at the rate
of 100 per minute then pause for 10 seconds while giving two breaths.
The compressions resume and the rhythm continues. The goal is to
complete 5 cycles of 30:2 in 2 minutes.
Example: When performing CPR you do 30 compressions at the
rate of 100 per minute then pause for 10 seconds while giving two
breaths. The compressions resume and the rhythm continues. The
goal is to complete 5 cycles of 30:2 in 2 minutes.
4. Work through related, contextual math-in-CTE examples.
How many compressions are you actually doing during this two minute 30 x 5 = 150 and 150 compressions in 2 minutes is not equivalent
cycle?
to 100 compressions in 1 minute.
150 100

This is because we are not actually doing compressions
2
1
continuously for the full 2 minutes.
5. Work through traditional math examples.
Jane’s mom drives her to school every day; it is approximately 2 miles.
On Tuesday, Jane decided to keep track of her mom’s driving time and
“pausing” time (at stop lights) in seconds. She found the following:
Driveway to first stop light 52 secs
Time at first stop light 23 secs
First stop light to second stoplight 12 secs
Time at second stop light 9 secs
second stop light to third stoplight 15 secs
Time at third stop light 22 secs
third stop light to fourth stoplight 37 secs
Time at fourth stop light 26 secs
fourth stop light to school 44 secs
How long did it take Jane to get to school on Tuesday?
To find the total time it took Jane to get to school all add the times
that are listed:
52 + 23 + 12 + 9 + 15 + 22 + 37 + 26 + 44 = 240 secs
Since there are 60 seconds in a minute, divide 240 by 60 to get 4
minutes.
Calculate the average speed of Jane’s car.
The average speed of Jane’s car can be found by adding first adding
the times that the car is in motion:
52 + 12 + 15 + 37 + 44 = 160 seconds
Convert 160 seconds to hours (since speed is in miles per hour) by
dividing by 3600 (60 seconds in a minute x 60 minutes in an hour).
160
 0.04444 hours
3600
It is 2 miles from Jane’s house to school so calculating miles per
hour would give:
miles
2

 45.45  45mph
hour 0.044
On Wednesday, Jane’s mom made it to school in 160 seconds (2 Answer: Jane’s mom “made” all the lights.
minutes and 40 seconds). If she maintained an average rate of
approximately 45 mph (the same as Tuesday), what could explain the
difference in times?
6. Students demonstrate their understanding.
Students practice CPR with and without the training video.
Students will perform compressions at the same rate whether they
are only doing compressions or doing compressions with pauses for
breathes.
Extra practice will perfect the transition between compressions and
breathing.
7. Formal assessment.
Students will answer correctly on the test and demonstrate completing Test question: What is the rate of compression?
30 compressions in approximately 20 seconds.
a) 30
b) 60
c) 75
d) 100
The correct answer is D, 100 .
The skill sheet check off requires the completion of 30 compressions
at the appropriate depth in less than 20 seconds.
NOTES: