Title: Measurement Inch, 12, and
1MeasurementInch, 1/2, and ¼
By
Karla Mills 3rd Grade
2Tennessee 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.
3Think of each inch as a rectangle
Each rectangle is a part of a whole.
4Think of each inch as a rectangle
5Think of each inch as a rectangle
6Think of each inch as a rectangle
7Each rectangle builds to make a 12 inch ruler.
8Numbers are added to look like a ruler.
10
0
1
2
3
4
7
8
11
12
6
9
5
9Numbers are added to look like a ruler.
10
0
1
2
3
4
7
8
11
12
6
9
5
12 inches is equal to 1 foot
The abbreviation for inch is . The abbreviation
for foot is ft.
10Three feet equal 1 yard
11If 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.
12Yes! You got it!
The answer is 36 inches
13Each rectangle can be divided in half (1/2)
14On your ruler, it will be slightly shorter.
15When the ½ inch line is added to our ruler, it
looks like this
10
0
1
2
3
4
7
8
11
12
6
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.
16Each rectangle is divided into equal parts.
- For example A rectangle can be divided in to 4
equal parts.
17When the 1/4 inch line is added to our ruler, it
looks like this
18Did 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.
192/4
1/4
3/4
OR
1/2