Measurement Study Guide

LENGTH

 Ruler = Tool used to measure the height and length of an object; a ruler is 12 inches  Students need to know how to measure to the nearest inch and centimeter  Proper placement of a ruler: start at one end of an item  If an object is placed in the middle of a ruler, for example, if a candy bar is placed at 6 inches and stops at 9 inches, it is NOT 9 inches long. It is 3 inches long.

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Linear standard measurement – based on the foot and includes inches Linear metric measurement – based on the meter and includes centimeters

Inch (in) = a U.S. customary unit for measuring length

 A unifix cube, a paperclip, and a button can be about 1 inch  12 inches = 1 foot  36 inches = 1 yard  3 feet = 1 yard

Centimeter (cm) = a metric unit for measuring length

 1 Reeses Pieces candy is about 1 centimeter  100 Reeses Pieces = 1 meter  1 box of crayons = about 10 centimeters long ***Think of real-life objects!***

Perimeter = the distance around any two-dimensional shape; found by adding the measures of the sides

Area = the measure in square units of the interior region of a two- dimensional figure; found by counting the number of square units within the perimeter Measurement - Volume and Weight

Volume = the number of cubic units needed to fill a solid; found by counting the number of cubes in the top layer of cubes and adding that number for each layer of cubes

WEIGHT AND MASS

Mass = the amount of matter in an object; remains the same regardless of location

Kilogram = a metric unit for measuring mass (1 kilogram is just over 2 pounds)

Weight = determined by the pull of gravity on the mass of an object; changes depending on gravitational pull

Pound = the U.S. customary unit for measuring weight

***Think of real-life examples!  A cat is about 5 pounds  A small dog is about 10 pounds  The mass of a math book is about one kilogram LIQUID VOLUME (cups, pints, quarts, gallons, and liters)

1 gallon = 4 quarts 1 quart = 2 pints 1 pint = 2 cups

 A gallon is more than a liter, quart, pint, and cup  A quart is more than a pint and cup  A pint is more than a cup

1 gallon of milk 1 liter of soda 1 quart of paint

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1 pint of ice cream 1 cup of tea

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