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Learning Target

Use strategies to develop formulas for finding the circumference of circles.

Examples

            34.2÷7.5

34.2÷7.5= 4.56

Lesson

       If you multiply the radius by the diameter of a circle the answer is the circumference.  What we did on Friday was this, we took           a string and we put it around a circular object.  Then we measuredthe amount of string we used.  In other words we measured           the circomference of the circular object.  then we measured the diameter of the object.  Finally we divided the circomference by          the diameter and we got the radius.

Link                                                                                                                                                                              enter this link into your address line to learn more about this scribe post:          

       http://www.mathgoodies.com/lessons/vol2/circumference.html