Math A

Discovering 

 

Supplies:  
  • Various sized tin cans, canisters, paper-towel rolls
  • String
  • Rulers
  • Optional:  Vernier calipers if you have them available

Students may work alone or in groups.  

Using the string, have students measure the circumference and diameter of several tin cans, canisters, paper-towel rolls, etc.   Discuss whether centimeters or inches would be more beneficial for the size of the canisters.  Record the data.

Canister Circumference Diameter C/d
#1      
#2      
#3      
#4      
#5      
#6      

After the data is collected, have the students divide the circumference by the diameter and record the answers in the table.

Students' answers should approximate .

 

 

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Roberts