Paul Revere Middle School
Students may click here to go straight to the lesson.
- Subject Areas: Computer Literacy, Math
- Grade Levels: 7th-9th grade
- Time Requirements:
- Approximately 1/2 hour Class Time
- Approximately 2 hours Computer Time
- Student Prerequisites:
- Spreadsheet basics
- Ability to read a ruler
- Measuring circumference of a circle to discover pi.
- Brief Overview: Working in partners, students will measure the circumference and diameter of various round objects. They will then record this and determine the ratio of the circumference to the diameter.
- Materials Required For This Lesson:
- Computer with Spreadsheet Software
- Various round objects (enough so that each pair has 6)
- String and rulers
- Internet access
- Create the following spreadsheet and print it.
AROUND AND AROUND WE GO
|NAME OF OBJECT
||RATIO OF THE CIRCUMFERENCE TO THE DIAMETER
- With your partner carefully measure the circumference and diameter of each object to the nearest 1/16th of an inch.
- Record your finding on your spreadsheet. Remember to put an equal (=) sign in front of each fraction. The computer will change the fractions to a 2 place decimal. The number of decimal places may be changed - check with your teacher for the correct number of places.
- Calculate the ratio of the circumference to the diameter for each object.
- Now calculate the average of these ratios.
- Print your spreadsheet.
- Answer the following questions on the back of your spreadsheet.
- What was the average ratio of the circumference to the diameter?
- It should be within a few decimal points of what number?
- What may have caused your ratio to not match pi?
Top of the page.
(Last Update: November 16, 1997 )
This page was developed through GirlTECH
'97, a teacher training and student technology council program sponsored
by the Center for Research on
Parallel Computation (CRPC), a National
Science Foundation-funded Science
and Technology Center.
© January 1998 Karen Shaw