4.3+Analyzing+Bones+10-11

May 31st, 2011 GG 7H

__Problem 4.3- Analyzing Bones__

Big Idea: Many real world situations can be modeled and predicted using mathematics.

Essential Question: How can I use math symbols to describe a pattern?

Notes from the class

Vocabulary

-Equation - A statement that the values of two mathematical expressions are equal -Symbol- A thing that represents or stands for something else

Examples from the White Board

Know about Moving Straight Ahead

-Equations -Symbols

Want to know about Moving Straight Ahead

-Linear Relationships -Rise -Run -Symbolic Method

Methods and Strategies discussed in class -Always use the symbolic method when needed to -Use equations to make tables and graphs

Questions for this problem’s unit:


 * 1) How long really is a femur?
 * 2) Who created the symbolic method?

__Problem 4.3__


 * A. How tall is a female if her femur is 46.2 centimeters long?**

She is 168.4574 cm tall.


 * B. How tall is a male if his tibia is 50.1 centimeters long?**

He is 201.5272 cm tall.


 * C. If a woman is 152 centimeters (about 5 feet) tall, how long is her femur? Her tibia? Her humerus? Her radius?**

It is about 39.1 cm long, It is about 31.4 cm long, It is about 27.7 cm long, It is about 20.25 cm long.


 * D. If a man is 183 centimeters (about 6 feet) tall, how long is his femur? His tibia? His humerus? His radius?**

It is about 50.1 cm long, It is about 42.35 com long, It is about 35.8 cm long, It is about 28.1 cm long.

__4.3 Follow Up__

Q: For one of the bones discussed above, graph the equations for males and females on the same set of axes. What do the x- and y-intercepts represent in terms of this problem? Does this make sense? Why?

A:

They represent height and length of femur, Yes because it matches the x and y axises’ representation.

http://missbates.org/math/connected/7/moving/moving.htm