I show and talk about these two basic units for measuring length in the metric system: meters and kilometers.
I illustrate the METER with a line on the board, plus I have it drawn on the floor. I jump a one-meter jump, and then walk half-meter steps. Mathy my mascot tries that too!
Kilometer is 1000 meters, and children can imagine taking a THOUSAND of those 1-meter steps (or jumps) to visualize this concept.
Lastly we figure out which is the most suitable measuring unit to use -- cm, m, or km -- for various things, such as the length of a train, around the Earth, a distance between towns, and so on.
Check out also my workbook Math Mammoth Measuring 1 at http://www.mathmammoth.com/measuring_1.php
Tagged under: meter,kilometer,measuring,length,2nd grade,math,measurement,cm,km,metric system
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