odndations of Mathematical Reasoning, In-Class Activities, Lesson 14.A Lesson 14, Part A, Body mass index Theme: Risk Assessment The body mass index (BMI) is a measure of body fat based on height and weight. It is standard tool for helping judge the amount of body fat you have. Carrying excess body lat Poto people at greater risk for health problems such as heart disease, cancer, diabetes, and strOKe BMI can be calculated using a simple ratio based on a person's height and weight. Your BiMr is considered to be in the normal range if it is between 18.5 and 25. BMI is considered a better predictor of health 1) than weight alone. Jot down your ideas about why this statement would be true, then share with another student. Credit: Andy Dea/Fotolia Objectives for the lesson You will understand that: O Substituting for one variable can yield a simplified formula. You will be able to: O Explicitly write out the order of operations to evaluate a given formula. BMI can be calculated with the following formula, where the weight is in pounds and the height is in inches. Weight Height? BMI x703 2) Joe is 5 feet, 10 inches tall. Substitute his height into the formula. 3) You have created a new formula that applies only to people who are Joe's height. What are the only variables that remain in your new formula? 4) Using your simplified formula, calculate Joe's BMI if he weighs 175 pounds. How does Joe's BMI change if he gains 10 pounds? If he loses 10 pounds? 5) Discuss with your group how you arrived at Joe's BMI value. For example, did you multiply, add, subtract, etc., and what did you do first? Outline the steps you took to calculate the BMI when given the height and weight. Be specific. Copyright © 2016, The Charles A. Dana Center at the University of Texas at Austin

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odndations of Mathematical Reasoning, In-Class Activities, Lesson 14.A
Lesson 14, Part A, Body mass index
Theme: Risk Assessment
The body mass index (BMI) is a measure of body fat based on height and weight. It is
standard tool for helping judge the amount of body fat you have. Carrying excess body lat Poto
people at greater risk for health problems such as heart disease, cancer, diabetes, and strOKe
BMI can be calculated using a simple ratio based on a person's height and weight. Your BiMr is
considered to be in the normal range if it is between 18.5 and 25.
BMI is considered a better predictor of health
1)
than weight alone. Jot down your ideas about
why this statement would be true, then share
with another student.
Credit: Andy Dea/Fotolia
Objectives for the lesson
You will understand that:
O Substituting for one variable can yield a simplified formula.
You will be able to:
O Explicitly write out the order of operations to evaluate a given formula.
BMI can be calculated with the following formula, where the weight is in pounds and the height
is in inches.
Weight
Height?
BMI
x703
2)
Joe is 5 feet, 10 inches tall. Substitute his height into the formula.
3)
You have created a new formula that applies only to people who are Joe's height. What
are the only variables that remain in your new formula?
4) Using your simplified formula, calculate Joe's BMI if he weighs 175 pounds. How does
Joe's BMI change if he gains 10 pounds? If he loses 10 pounds?
5)
Discuss with your group how you arrived at Joe's BMI value. For example, did you
multiply, add, subtract, etc., and what did you do first? Outline the steps you took to
calculate the BMI when given the height and weight. Be specific.
Copyright © 2016, The Charles A. Dana Center at the University of Texas at Austin
Transcribed Image Text:odndations of Mathematical Reasoning, In-Class Activities, Lesson 14.A Lesson 14, Part A, Body mass index Theme: Risk Assessment The body mass index (BMI) is a measure of body fat based on height and weight. It is standard tool for helping judge the amount of body fat you have. Carrying excess body lat Poto people at greater risk for health problems such as heart disease, cancer, diabetes, and strOKe BMI can be calculated using a simple ratio based on a person's height and weight. Your BiMr is considered to be in the normal range if it is between 18.5 and 25. BMI is considered a better predictor of health 1) than weight alone. Jot down your ideas about why this statement would be true, then share with another student. Credit: Andy Dea/Fotolia Objectives for the lesson You will understand that: O Substituting for one variable can yield a simplified formula. You will be able to: O Explicitly write out the order of operations to evaluate a given formula. BMI can be calculated with the following formula, where the weight is in pounds and the height is in inches. Weight Height? BMI x703 2) Joe is 5 feet, 10 inches tall. Substitute his height into the formula. 3) You have created a new formula that applies only to people who are Joe's height. What are the only variables that remain in your new formula? 4) Using your simplified formula, calculate Joe's BMI if he weighs 175 pounds. How does Joe's BMI change if he gains 10 pounds? If he loses 10 pounds? 5) Discuss with your group how you arrived at Joe's BMI value. For example, did you multiply, add, subtract, etc., and what did you do first? Outline the steps you took to calculate the BMI when given the height and weight. Be specific. Copyright © 2016, The Charles A. Dana Center at the University of Texas at Austin
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