The 2nd Grade Common Core Standards asks students to “Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.”
Hand each child a sheet and ask the kids to cut the ruler drawing along the lines. Once they have the pieces cut out, point out that each segment is one inch, just like on their ruler, and objects can be measured in these increments. Have the kids line up various numbers of segments and count the pieces.
(For example, “My leg is longer than my arm by 3 inches.”) They measure the same thing twice — once in inches and once in centimeters — and discuss the relationship between these results. (For example, “My pencil is about 15 centimeters long and about 6 inches long because centimeters are smaller than inches.”)
The definition of an inch is a small measurement equal to 1/12th of a foot or 2.54 centimeters. An example of an inch is the length of a snail.
|10 millimeters (mm)||= 1 centimeter (cm)|
|10 centimeters||= 1 decimeter (dm) = 100 millimeters|
|10 decimeters||= 1 meter (m) = 1000 millimeters|
|10 meters||= 1 dekameter (dam)|
|10 dekameters||= 1 hectometer (hm) = 100 meters|
Move around your home and measure similar objects, such as the television, sofa, or bed. Next, help your child measure their own height, yours, and each member of your family. These familiar objects will help put into perspective the relationship between the ruler and the length or height of objects.
Use comparison words such as big and little, few or lots, when talking with children of all ages. Use math talk: “The pink toy is bigger than the blue toy.” “You are taller than your sister.” “You put the smaller cup in the larger cup.” Emphasize with the tone of your voice the measurement words.
Teach the units of measurement to children. Post a chart or give each child a printout of measurements to read and learn. Help children learn the concepts of inches, feet and yards. Have them recite volume measurements like how many ounces in a cup, cups in a pint, quarts in a gallon and dry ounces in a pound.
Measurement is defined as the act of measuring or the size of something. An example of measurement means the use of a ruler to determine the length of a piece of paper. An example of measurement is 15″ by 25″. Extent, quality, or size as determined by measuring; dimension.
Children are typically not able to unitize before age 8. Develop- ing the ability to measure units without leaving gaps between the units or overlapping them is an important task for young children who are beginning to learning to measure units.
Why teach measurement? … Measurement is important in providing links between strands of mathematics. For example, it provides a rich and meaningful context for the use of number skills and of spatial concepts. Measurement also provides links between mathematics and other school subjects.
* Use your own body for fast, approximate measuring. The first joint of an index finger is about 1 inch long. When a hand is spread wide, the span from the tip of the thumb to the tip of the pinkie is about 9 inches; from the tip of the thumb to the tip of the index finger, around 6 inches.
inch, unit of British Imperial and United States Customary measure equal to 1/36 of a yard. The unit derives from the Old English ince, or ynce, which in turn came from the Latin unit uncia, which was “one-twelfth” of a Roman foot, or pes. … Since 1959 the inch has been defined officially as 2.54 cm.
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