Math-in-CTE Lesson Plan
Lesson Title: Newborn Assessment
Author(s):
Lyn Gray, RN & Jeanie
Wilson, RN
Matthew Hagen
Phone Number(s):
503-353-5920
Lesson # 4
E-mail Address(es):
[email protected]
[email protected]
[email protected]
Occupational Area: Health Sciences
CTE Concept(s): Perform well baby checkup and physical examinations.
Math Concepts: Complete math conversions: kilograms (kg) to pounds (lb) and
centimeter (cm) to inches (in); Determine circumference;Use proportions.
Learning Objective: The students will be able to: perform height, weight, head circumference, and
chest circumference of an infant; convert metrics to US Customary system (English) of units.
Common Core SS Math Standard:
6.RP.3. Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by
reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or
equations. Solve unit rate problems including those involving unit pricing and constant speed. For
example, if it took 7 hours to mow 4 lawns, then at that rate, how many lawns could be mowed in
35 hours? At what rate were lawns being mowed?
Use ratio reasoning to convert measurement units; manipulate and transform units appropriately
when multiplying or dividing quantities
7.RP.2. Recognize and represent proportional relationships between quantities. Decide whether
two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or
graphing on a coordinate plane and observing whether the graph is a straight line through the
origin.
Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and
verbal descriptions of proportional relationships.
Supplies Needed:
Baby, measuring tape, baby scale, paper, pencil, calculator,
lab sheet and quiz
Math-in-CTE Technical Assistance
TEACHER NOTES
(and answer key)
THE "7 ELEMENTS"
1. Introduce the CTE lesson.
The teacher begins her class by “hooking”
students with a role play situation of a mother
bringing her baby into the doctor’s office for a
routine, well-baby checkup. The teacher selects
a student from the classroom to come up and
role play the mother of the infant, while the
teacher plays the nurse. During the role play, the
nurse explains to the mother that in order to
determine if the infant is developing correctly, the
child must have various assessments performed.
These will include:
height, weight, and
measuring head/chest circumference. Some of
these measurements will need to be converted
from metrics to English units or vice versa.
2. Assess students’ math awareness as it
relates to the CTE lesson.
As a review, can anyone properly demonstrate
how to read a measuring tape? What is
circumference? How do you weigh a baby?
How do you measure the height and weight of a
baby? How do you measure head/chest
circumference? How many cm are in an inch?
How many lbs are in a kg? How do you convert
from one unit to another?
Teacher selects student from the class to
come up and role play the mother of the
infant. The teacher demonstrates how to
weigh and measure the infant in order to find
data needed to determine if the baby is
developing normal. The teacher will also
explain that these measurements may need
to be converted from metric units to English
units or vice versa. Metric units are normally
used in documenting information on medical
records. English units often provide a better
understanding for the parent.
Ask various students to volunteer to answer
questions asked by teacher: Can anyone
properly demonstrate how to read a
measuring tape? What is circumference?
How do you weigh a baby? How do you
measure the height of a baby? How do you
measure head/chest circumference? How
many cm are in an inch? How many lbs are
in a kg? How do you convert from one unit to
another?
Math Information:
Reading of tape measure: Remember a tape
measure has two sides, one side measures
inches and the other side measures
centimeters. On the side that measures
centimeters, the longer marks represent
centimeters (cm), and the shorter marks
represent millimeters (mm).
10mm = 1cm
Circumference: the distance around a circle
An
infant’s
Rounding/Conversions:
head/chest
circumference
should
be
measured to the nearest ½ a cm. When
measuring an infant’s length, the reading will
be taken to the nearest ¼ of an inch. An
infant’s weight will be measured in lbs. and
oz. This weight often has to be converted
into kg for medical records and medication
Math-in-CTE Technical Assistance
administration.
1 inch = 2.54 cm
1 kg = 2.2 lbs
1lb = 16 oz
3. Work through the math example embedded Before you show them how to solve a
proportion talk briefly about the idea of
in the CTE lesson.
proportional
relationships.
Now, we will go step by step and perform the
Ask the question:
assessments on the infant. We will also learn
how to perform some simple conversions from If 1 out of every 3 boys loves me then how
metric units to English units and vice versa.
many out of 6 love me? Write it on the board
as
1 = 2
3 total
Measurements of the baby were as follows:
6 total
What is wrong with this statement? If every
human has 2 hands then 5 humans would
have a total of 13 hands?
Write the
proportion on the board.
Weight – 7 lbs 4 oz
1 human =
Length/height – 18 in
2 hands
5 humans
13 hands
Head Circumference – 37.5 cm
Chest Circumference – 40 cm
If a patient gets 3 aspirin every 4 hours then
how many aspirin would they get over a
period of 16 hours. Write the proportion on
the board
Now onto the example:
Take the baby, place on scales and obtain
weight reading in lbs and oz. Note: When
weighing a baby, you need to always take
their clothes off. Also, never leave a baby on
a scale unattended. Weight = 7 lbs 4 oz
1. To get at the idea of what is right or
wrong ask if 7 lbs 4 oz is equal to 7.4
oz. NO!
2. So first we need to convert oz into lbs.
7 lbs 4 oz = 7 lbs 4/16 oz
Since 1lb = 16 ozwe can convert oz
into lbs
4 oz=
1
16oz4
or .25
So 7 lbs 4 oz = 7.25 lbs
Math-in-CTE Technical Assistance
3. This allows us to be able to set up a
proportion to obtain weight in kg for
medical records and medication
purposes.
Since 1 kg = 2.2 lbs we can write the
proportion
1 kg
=
x kg
2.2 lbs
7.25 lbs
To solve we cross multiply to get
(7.25)(1) = (2.2)(x)
7.25 = 2.2 x
7.25 = 2.2 x
2.2
2.2
x = 3.295 … or 3.30
The infant’s weight in kg is 3.3 kg
Point out that a student could check their
work the equation backwards. So the
student could multiply their answer by
2.2, because 1 kg = 2.2 lbs.
(3.30)(2.2) = 7.26 lbs
4. Lay the baby onto the table supine (on
their back). Measure from the top of
the head to the infant’s heel. Take the
reading.
Height = 18 inches
5. Convert 18 in to cm
1 inch = 2.54 cm
1 in
2.54 cm
=
18 in
x cm
(1)(x) = (2.54)(18)
x = 45.72 cm or 46 cm if rounded
to the nearest whole number. It
would be 45.7 if rounded to the
nearest tenth.
6. Measure the circumference of the head
by: placing the measuring device
around the largest area of the head,
Math-in-CTE Technical Assistance
beginning above the eyebrows and
ears, and continuing around the back
part of the head.
Head Circumference = 37.5 cm
7. Measure the circumference of the
Chest by: lining the tape up with the
nipple line, and continuing around the
baby’s back.
Chest Circumference: 40 cm
4. Work through related, contextual math-inCTE examples.
We will now
examples:
work
through
other
related
1. A can of green beans has 6 servings.
There are 3 fat grams per serving. How
There are many areas within the medical field
where conversions, ratios and proportions
could be used to solve a problem. Below are
a few examples.
3 fats =
1 serving
x fats
6 servings
(1)(x) = (3)(6)
Many fat grams are in the entire can of
18
1x =
beans?
1
1
X = 18 fats per can of beans
2. A doctor prescribes for Mrs. Brown to take
1 tab
=
x tabs
20 mg
40 mg
40 mg of Lasix PO q am. The pharmacy
only has 20 mg tablets. How many tablets
(20)(x) = (40)(1)
would Mrs. Brown need to take every
40
20x=
morning?
20
X = 2 tablets q am
Math-in-CTE Technical Assistance
20
5. Work through traditional math examples.
These are sample problems that will
performed in the regular math classroom.
be
Solve the various problems:
1.
Jason’s rental car gets 24 miles per
gallon. The tank holds 18 gallons. How
Many miles can be he travel on one tank
of gas?
2. Ribbon for a sewing project cost $0.08 per
inch. How many inches of ribbon
can you purchase for $2.00?
If there are 2.54 cm in 1 in, how many cm
are you purchasing?
x
24 miles=
1 gal
18 gal
24(18) = x (1)
X = 432 miles
First find total inches:
$0.08
1 in
=
$2.00
x in
0.08(x) = 1 ( 2.00)
X = 25 in.
2.54 cm = __x__
1 in
25 in
2.54(25) = x (1)
x = 63.5 cm
3. Sally buys a package of 6 candy bars
for $3.30 and then sells the candy bars at
the school play for 75 cents each. How
much money does Sally earn on each
candy bar?
(Note: Only 29.35% 17 year olds
answered this correctly)
4. Grape Crush Soda costs 75¢ for one
48 ounce can. At the school carnival Joan
sells cups holding 6 ounces for 15¢. How
much money does the school make on
each can?
(Only 22.16% 17 year olds answered
this correctly)
Math-in-CTE Technical Assistance
In English…”If six candy bars costs
$3.30 then 1 candy bar costs _____
dollars”
1 candy bar
6 candy bars=
$3.30
x
6x = $3.30
X = .55
Now what operation do you use next?
Subtraction.
.75 – .55 = .20
How would you solve this?
5. CALCULATING CIRCUMFERENCE
WITHOUT A TAPE.
Lindsey wants to have a chain-link fence
installed around the horse walk on her
farm.
The walk is in the shape of a circle with a
radius of 12 feet. The fence will cost
$7.00per linear foot and can be
purchased only by even increments of
feet. How much will It cost to fence the
circumference of the horse walk?
Circumference = 2πr
Π = 3.14
C = 2(3.14)(12)
C = 75.36 feet
cost: 75.36 (7) = $532
6. Students demonstrate their understanding.
Now that we have discussed how to obtain
height, weight, head circumference and chest
circumference on an infant, the class will go into
the lab and practice these skills. The lab will be
set up into stations. A few baby models will be
set up around the room. One station will have a
scale and others will have measuring tapes.
Students will be instructed to rotate from station
to station, obtaining height, weight, head
circumference and chest circumference on the
infant models.
Lab stations set up with various size baby
models. Teacher will measure each model
before hand and have a key made out with
correct answers. The students will rotate in
the lab through each station measuring dolls.
Students will record information onto lab
sheet. The teacher will then go over correct
answers with students and explain any
questions that may arise. (See Attached)
7. Formal assessment.
Teacher/made quiz. (See Attached)
Math concepts will be assessed after all students
have completed the lab exercises. The student
will demonstrate competence of math skills by
completing a quiz for a test grade.
Math-in-CTE Technical Assistance
Name: ___________________
NEWBORN ASSESSMENT
Student materials needed: notes, paper, pencil
Using the infant model at each station work with your partner(s) to answerthe following questions.
The teacher will tell you when to rotate to another station. Each person in your group will need to
fill out their own lab sheet.
Station
Question
1
Measure the chest circumference of the infant in cm.
2
Measure the head circumference of the infant in cm.
3
Measure the weight of the baby in pounds/ounces.
4
Using the information from station 3, convert to kg.
5
Measure the height of the baby in centimeters.
6
Using the information from station 5 convert to inches.
Record your answers below.
1.
2.
3.
4.
________ ________ ________ ________ 5. ________ 6. ________ Name: _____________________
Math-in-CTE Technical Assistance
Quiz- Newborn Assessment
Using the following scenarios, answer the math questions below.
A mother carries her baby to see Dr. Seuss for a check-up. Upon arrival, Dr.
Seuss’ nurse performs routine measurements on the baby. She
finds that the baby weighs 8 lbs 2 oz. The baby’s length is 23 in. The
circumference of the chest is 43cm. The circumference of the head is 39 in.
1. How much does the baby weigh in kg? Round to nearest tenth.
2. Convert the baby’s length from inches to cm. Round to nearest whole number.
3. What is the head circumference in inches? Round to the nearest whole number.
4. Explain how to measure the circumference of the baby’s chest?
.
Math-in-CTE Technical Assistance
Answer Key for Quiz
1. 3.7 kg
2. 59 cm
3. 17 in
4. The measuring tape will placed along the nipple line and carried around the
back of the baby’s body.
Math-in-CTE Technical Assistance