A Potpourri of Science Ideas
Group Mini Teach
Finding Pi
Foreman, Dorothy Joplin School
Objective:
To measure the circumference and the diameter of various cylinders,
and to use the ratio C/D to find pi.
Apparatus Needed:
metric rulers, string, graph paper, tape, cylinders of various sizes.
Recommended Strategy:
Roll the cylinders one complete revolution and measure the distance
traveled. Use string to measure the diameter. Make a data table. Make
a pi graph. Use the pi graph to calculate the constant ratio pi.
(Students should discover a direct proportion between the variables).
Return to Physics Index