Linear Measurement and Perimeter

Last week we did a lot of measuring!  We looked at the different units that people use to measure and talked a lot about meters, centimeters, and millimeters.  We found benchmark measurements - things that are about

the same size as a particular unit.  For example, a benchmark measurement for 1cm would be the width of a small popsicle stick.  A benchmark measurement for 10cm could be the length of our classroom calculators.  Benchmarks help us to make estimates about certain measurements. 

We found that there are 10 millimeters in 1 centimeter.  We also wrote measurements in centimeters and millimeters.  For example, 252 millimeters = 25.2 centimeters.

We went out to the soccer field and measure it to the nearest meter.  We then found the perimeter of the field.