Learning Target

Finding the circumference of an object.

Lesson

To find a circumference, measure the perimeter of the object. For instance, if you're trying to figure out the circumference of a tree (below) then measure around the trunk. It must be a 3-D object. Make sure you measure the length around the object, not up or down. Another way to find a circumference is to multiply the diameter by Π. (3.14, also pi).

Example

2xΠ =6.28

Π= 3.14 (pi)

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Modified on December 7, 2006 at 9:49 PM

Thermal Energy

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Modified on October 23, 2006 at 11:11 PM

LERNING TARGET

Estimating sums and differences

Example

   67.89  +68
+ 59.44  +58

  127.33    126

Lesson

When your'e rounding you always want to round to the nearest whole number.

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Modified on October 24, 2006 at 12:03 AM