Wednesday, March 13, 2013

Math Update

We have jumped right into Unit 9, which is all about measurement! The children learned about standard units of measure, and how important it is to use a common unit when measuring an object or a distance. We studied the yard and the meter. The children reviewed measuring with inches, feet, centimeters and decimeters. We developed a table of equivalent linear measures, splitting it into two parts: the US customary system and the metric system. Its so important for the children to become familiar with both sytems. We looked carefully at the measurements on each side. We noticed that an inch is 1/36 of a yard and 1/12 of a foot, a decimeter is 1/10 of a meter, a centimeter is 1/100 of a meter, etc. We looked carefully at a ruler and counted the segments in between the inch marks. The children identified these sections, for example: 1/8 of an inch, 1/16 of an inch, 1/10 of a centimeter. They practiced measuring to the nearest half inch and half centimeter. Finally, the children explored the concept of perimeter. They measured the length of the sides of a variety of shapes and added them together to find the distance around the shape.

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