Let’s Take a Slice of Pi
Pi Day Activity
Math Lab
Name:__________________________________
Date:____________________________
Hour:_____________________
Math Lab: Let’s Take a Slice of Pi
Pre-Lab Questions:
1. Solve 𝐶 = 𝜋𝑑 for 𝜋.
2. How close do you think we will get to estimating the value of pi in this lab? Explain.
Materials Needed:
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This Handout
Pencil
Ruler
Yarn
Three Different Circles
Calculator
Procedure:
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Measure the diameters of three different circles in centimeters and record the values in the table below.
Measure the circumference of the same three circles in centimeters and record the values in the table below.
Calculate the value of pi for each of the circles.
Calculate the average value of pi for all three circles by dividing the circumference by the diameter.
Record the average value of pi on the spreadsheet on Mrs. Moon’s computer.
Answer the concluding questions.
Turn in this math lab.
Enjoy pie!
Data and Calculations:
Circle (List Item Name)
Diameter (cm)
Circumference (cm)
Value of Pi, 𝝅
Average Value of Pi:
Conclusions:
1. Do the calculated values of pi for each of your circles match (Yes, Very Close, No)? Explain why.
2. Is the average value of pi close to the accepted value of pi, 3.1415…? Explain why.