Measurement Inch, 1/2

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MeasurementInch, 1/2, and ¼
By
Karla Mills 3rd Grade
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Tennessee Standard 4 Geometry and Measurement

•     0306.4.11  Know common equivalences for
  length (1 meter 100 centimeters, 1 yard 3
  feet, 1 foot 12 inches).
• 0306.4.12 Make and record measurements that use
  mixed units within the same system of measurement
  (such as feet and inches, meters and
  centimeters).
• 0306.4.13  Use common abbreviations km, m, cm,
  in, ft, yd, mi.

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Think of each inch as a rectangle
Each rectangle is a part of a whole.
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Think of each inch as a rectangle
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Think of each inch as a rectangle
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Think of each inch as a rectangle
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Each rectangle builds to make a 12 inch ruler.
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Numbers are added to look like a ruler.
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2
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11
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Numbers are added to look like a ruler.
10
0
1
2
3
4
7
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11
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9
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12 inches is equal to 1 foot
The abbreviation for inch is . The abbreviation
for foot is ft.
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Three feet equal 1 yard
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If 1 foot is equal to 12 inches,
And 1 yard is equal to 3 feet.
How many inches are in one yard?
The abbreviation for yard is yd.
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Yes! You got it!
The answer is 36 inches
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Each rectangle can be divided in half (1/2)
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On your ruler, it will be slightly shorter.
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When the ½ inch line is added to our ruler, it
looks like this
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1
2
3
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7
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11
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9
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• I have made the ½ inch line red it makes it
  easier to see.
• Highlight the ½ inch line on your ruler with a
  red crayon.

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Each rectangle is divided into equal parts.

• For example A rectangle can be divided in to 4
  equal parts.

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When the 1/4 inch line is added to our ruler, it
looks like this
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Did you notice the ½ inch line is the same
as the second ¼ inch line. 2/4 is the same as ½.
If you eat 2/4 of a pie, you have eaten ½ of the
pie.

• Lets look at that again.

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2/4
1/4
3/4
OR
1/2