The Metric System: Measuring Length

1 / 12

# The Metric System: Measuring Length - PowerPoint PPT Presentation

The Metric System: Measuring Length. Sarah Jones CS 255. Introduction to the Metric System. The metric system first came about in the 1790’s when the French Academy of Science was asked to construct a new system of units for use throughout the world.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'The Metric System: Measuring Length' - jacob

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### The Metric System: Measuring Length

Sarah Jones

CS 255

Introduction to the Metric System
• The metric system first came about in the 1790’s when the French Academy of Science was asked to construct a new system of units for use throughout the world.
• The metric system evolved over the years and in the 1960’s was named the International System of Measurement (SI for short). To get the meter, they divided a line from the north pole to the equator into 10 million parts!
No numbers to memorize

Only 30 individual units

Easy to say and write

No fractions only decimals

World standard

Converts easily by multiples of 10.

Prefixes and Multiplier:

Kilo = 1000

Hecto = 100

Deca = 10

Meter = 1

Deci = .1

Centi = .01

Milli = .001

Examples:

Kilometer

Hectometer

Decameter

Meter

Decimeter

Centimeter

Millimeter

Units of Measurement
Length:
• The standard unit of length in the metric system is the meter. Other units of length and their equivalents in meters are as follows: 1 millimeter = 0.001 meter1 centimeter = 0.01 meter1 decimeter = 0.1 meter1 decameter = 10 meters

1 hectometer = 100 meters

1 kilometer = 1000 meters

Abbreviations:
• We abbreviate these lengths as follows:1 millimeter = 1 mm1 centimeter = 1 cm1 meter = 1 m1 decimeter = 1 dm1 kilometer = 1 km
Examples:
• For reference, 1 meter is a little longer than 1 yard or 3 feet. It is about half the height of a very tall adult. A centimeter is nearly the diameter of a dime, a little less than half an inch. A millimeter is about the thickness of a dime.
Metric Conversion Steps

For more on conversions visit:All you will need to know about metric.

39,370 inches = 1 kilometer

3280.8 feet = 1 kilometer

.62 miles = 1 kilometer

39 inches = 1 meter

3.28 feet = 1 meter

1 inch = 254 mm

1 inch = 2.54 cm

1 foot = 30.48 cm

1 yard = 91.44 cm

1 yard = .914 m

1 mile = 1609.3 m

1 mile = 1.609 km

English to Metric Conversions

You do not need to know these. They are just for you to get an idea of how these systems compare.

Metric Smile Project
• ACTIVITY AND PROCEDURES:
• Divide the class into groups of four.
• Each student will measure and record the length of each person's smile in their group (in centimeters).
• The students need to check their results against the results of the rest of the group. If there are any discrepancies the students should verify the results as a group.
Project (continued)
• When an accurate measurement has been obtained for each child the results are recorded on the chalkboard as each child records them at their seat.
• Order all the measurements from least to greatest.