standard and-metric-measurement-power point
TRANSCRIPT
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Introduction to Measurement
Developing Standard and Metric Measuring Skills
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Why Learn to Measure?
Valuable skill for a job
Valuable skill for hobbies
Valuable skill for every day life
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Measurement Systems
Two types of measurement systems exist.
– Standard (Customary)
- Metric (SI or International System)
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Standard (Customary) System
Inches Fractions
2
4
8
16
¼ ¾
The Whole InchFirst Half Second Half
1/8 3/8 5/8 7/8
1/16 3/16 5/16 7/16 9/16 11/16 13/16 15/16
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1. Find out how many parts the inches are divided into.Count the spaces in 1 inch.
This number will be the denominator.
2. Count the number of whole inches.Write down the number.
3. Count the number of spaces after the last whole inch.This number will be the numerator.
4. Reduce fraction, if necessary.
Steps in Using the Standard (Customary) System
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Step 1
Step 2Step 3
Find Denominator
Count Whole InchesFind Numerator
Step 4Reduce Fraction, If Necessary
Let’s Review
16
71
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Let’s Practice
What is the distance from the end of the ruler to A?
What is the distance from the end of the ruler to E?What is the distance from the end of the ruler to D?What is the distance from the end of the ruler to C?What is the distance from the end of the ruler to B?
¼ in.15/16 in.1 ¾ in.2 3/8 in.3 1/16 in.
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Metric SystemInternational System of Units (SI)Millimeters andCentimeters Decimals
1 mm = 0.1 cm
5 mm = 0.5 cm
10 mm = 1 cm
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Steps in Using the Metric (SI) System
1. Count the number of whole centimeters (cm).
These are the larger lines with numbers
2. Count the number of lines after the whole number.
The smaller lines are millimeters (mm).
3. Put in correct terms.Since mm are 1/10th of a cm, if you measure 7 marks after 1 cm, the measure is 1.7 cm or 17 mm long.
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Let’s Practice
What is the distance from the end of the ruler to A?
What is the distance from the end of the ruler to E?What is the distance from the end of the ruler to D?What is the distance from the end of the ruler to C?What is the distance from the end of the ruler to B?
4 mm = 0.4 cm19 mm = 1.9 cm37 mm = 3.7 cm63 mm = 6.3 cm73 mm = 7.3 cm
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Converting from Standard to Metric
Convert from: To: Multiply by:mile kilometer (km) 1.609347inch millimeter (mm) 25.4inch centimeter (cm) 2.54foot meter (m) 0.3048yard meter (m) 0.9144
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Converting from Metric to Standard
Convert from: To: Multiply by:
kilometer (km) mile 0.6214millimeter (mm) inch 0.0394centimeter (cm) inch 0.3937meter (m) foot 3.281meter (m) yard 1.094
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Let’s PracticeYou used a meter stick to measure your window for new shades. However, the shade packages list the measurements in English units. Luckily your cell phone has a calculator so that you can quickly convert your 81.3 cm by 91.4 cm window opening to English units. What size is your window using English units? Round to the nearest inch.81.3 x .3937 = 32 in.91.4 x .3937 = 36 in.
Therefore, the window opening is 32 in. by 36 in.
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Image Resources
Microsoft, Inc. (2008). Clip Art. Retrieved October 7, 2008, from http://office.microsoft.com/en-us/clipart/default.aspx