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Measurement Inch, 12, and

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... for length (1 meter = 100 centimeters, 1 yard = 3 feet, 1 foot = 12 inches) ... When the 1/4 inch line is added to our ruler, it looks like this ... – PowerPoint PPT presentation

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Title: Measurement Inch, 12, and


1
MeasurementInch, 1/2, and ¼
By
Karla Mills 3rd Grade
2
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.

3
Think of each inch as a rectangle
Each rectangle is a part of a whole.
4
Think of each inch as a rectangle
5
Think of each inch as a rectangle
6
Think of each inch as a rectangle
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Each rectangle builds to make a 12 inch ruler.
8
Numbers are added to look like a ruler.
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Numbers are added to look like a ruler.
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12 inches is equal to 1 foot
The abbreviation for inch is . The abbreviation
for foot is ft.
10
Three feet equal 1 yard
11
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.
12
Yes! You got it!
The answer is 36 inches
13
Each rectangle can be divided in half (1/2)
14
On your ruler, it will be slightly shorter.
15
When the ½ inch line is added to our ruler, it
looks like this
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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.

16
Each rectangle is divided into equal parts.
  • For example A rectangle can be divided in to 4
    equal parts.

17
When the 1/4 inch line is added to our ruler, it
looks like this
18
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.

19
2/4
1/4
3/4
OR
1/2
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