Measurement Inch, 1/2”, and ¼” Karla Mills 3 rd Grade By:
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Measurement Inch, 1/2”, and ¼” Karla Mills 3 rd Grade By:
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Transcript of Measurement Inch, 1/2”, and ¼” Karla Mills 3 rd Grade By:
MeasurementInch, 1/2”, and ¼”
Karla Mills3rd Grade
By:
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.
Think of each inch as a rectangle
Each rectangle is a part of a whole.
Think of each inch as a rectangle
Think of each inch as a rectangle
Think of each inch as a rectangle
Each rectangle builds to make a 12 inch ruler.
Numbers are added to look like a ruler.
0 1 2 3 4 5 6 7 8 9 10 11 12
Numbers are added to look like a ruler.
0 1 2 3 4 5 6 7 8 9 10 11 12
12 inches is equal to 1 foot
The abbreviation for inch is “. The abbreviation for foot is ft.
Three feet equal 1 yard
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.
Yes! You got it!
The answer is 36 inches
Each rectangle can be divided in half (1/2)
On your ruler, it will be slightly shorter.
When the ½ inch line is added to our ruler, it looks like this
0 1 2 3 4 5 6 7 8 9 10 11 12
• 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.
Each rectangle is divided into equal parts.
• For example : A rectangle can be divided in to 4 equal parts.
When the 1/4 inch line is added to our ruler, it looks like this
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.
1/4 2/4 3/4 OR
1/2
