Circumference Investigation

• make a chart with 4 columns: Name of object, Circumference, diameter, C/d


• find a round object in your house


• Examples: top of a cup, top of a bowl, bottom of tupperware container


• then take a piece of string and wrap it around your round object


• using a cm ruler, determine how much string it took for you to wrap it around your round object EXACTLY one time


• then determine the length of your diameter using the knowledge you obtained in class today


• then put this information in your chart


• repeat this for at least 3 more round objects in your house


• to determine the answer to your last column, you must divide your circumference by your diameter. do you notice anything special about this number for all 4 of your round objects?


• call a couple of friends and see what their results are....


• be ready to discuss your results in class tomorrow


• everyone MUST share one of their 4 examples with the class tomorrow

7.2 PDF

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7.3 PDF

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