Students estimate the heights of people and compare the estimates to the actual heights in a scatter plot.

Before the Activity

See the attached PDF file for detailed instructions for this activity

Print pages 107 - 111 from the attached PDF file for your class

During the Activity

Distribute the pages to the class.

Follow the activity procedures:

Write down the names of some famous people in the table

Estimate their heights and record the estimation

Note down the actual heights

Using the calculator, convert the estimated and actual heights into inches

Graph a scatter plot of estimated height versus actual height [both in inches]

Determine the number of people for which the estimate was correct

Determine the number of people for which the estimate was too high or too low

Understand that if all the estimates matched the actual heights, the line would represent y = x

Recognize the fact that if an estimate was high, the coordinates for that point would lie above the line y = x, and if the estimate was low, the point would lie below the line

After the Activity

Students complete the Student Activity pages.

Review student results

As a class, discuss questions that appeared to be more challenging