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Thursday, December 9, 2010

Metric System Game

http://www.hbschool.com/activity/con_math/g05c14.html

This game will help you practice the metric system!

Nonstandard Units of Length

    Back before the metric system and English Units of measurement, there were the Nonstandard units of length. These units were used by major empires like the Babylonian empire and the Egyptian empire. The hand was used for almost all measurements. Today the only measurements we take with our hands is to find the height of a horse.

   There are four basic units of measurement. There is the Span, Foot, Hand, and Cubit. The Span is the length from your pinky finger to your thumb. The Foot is the length from your heel to your big toe. The hand is simply the measure from one side of your hand to the other. Then there is the cubit which is simply the length from your elbow to the tips of your fingers.

Surface Area

    The definition for surface area is  the number of unit squares needed to cover the surface. Surface area deals with totally different objects then area does and has different formulas too.

Surface Area of a Rectangle: 2lw + 2lh + 2wh

Surface Area of a Prism: 2 x area of base + 2 x height of base

 Surface Area of a Cylinder: 2 x pie x radius x height + 2 x pie x radius (squared)

Surface Area of a Pyramid: It is simply the area of the base + the sum of all the areas of all the triangular faces.

Surface Area of a cone: Pie x Radius (squared) + pie x radius x the side

Surface Area of a circle: 4 x pie x radius (squared)

Those are all the formulas for surface area.

:)

Celsius vs Fahrenheit

Metric System Cartoon

Measurement converter

http://people.virginia.edu/~rmf8a/convert.html

This site will convert units for you!

Area Formulas

http://www.factmonster.com/ipka/A0876858.html