Illustrated Mathematics Dictionary

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Easy-to-understand definitions, with illustrations and links to further reading.

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721 Definitions, 623 Illustrated, 156 Animated

MEASURE ------ BY. MWL. JAPHET MASATU.

Measurement Index

Measurement is finding a number that shows the size or amount of something.

There are two main "Systems of Measurement": Metric and US Standard
	Metric Introduction to the Metric System (with Maggie!) The Metric System of Measurement Metric Numbers US Standard Units Introduction to US Standard Units (with Maggie!)

We can measure many different things, but most often we measure Length, Area, Volume, Mass and Time.

Length

• Metric Lengths
• US Standard Lengths
• Activity: Discover Lengths

Area

• Metric Area
• US Standard Area
• Area of Circle, Triangle, Square, Rectangle, Parallelogram, Trapezium, Ellipse and Sector
• Activity: Area of a Garden

Volume

• Metric Volumes
• US Standard Volumes
• Measuring Cups
• Activity: Discover Capacity

Mass (Weight)

• Metric Mass
• US Standard Mass
• Weight or Mass?
• Apparent Weight
• Activity: Discover Mass

Activity

• Activity: Personal Measures

Time and Date

• Clocks - Digital and Analog
• Analog and Digital Clocks Animation
• Date and Time Clock (24 hour and AM/PM)
• Stopwatches
• Adding and Subtracting Time
• Day of the Week you were Born

• Introduction to Days, Weeks, Months and Years
• Days
• Weeks
• Months
• Years
• Seasons
• Days Between Two Dates
• 12 Month Calendar

• AD and BC
• Leap Years
• Earth's Orbit and Daylight
• Sun Clock
• World Time Zones

• The Time - Converting AM/PM to 24 Hour Clock
• Time Worksheets

Conversions

How do you change from one measurement to another? If you know how long something is in meters, but need to know feet? Or square inches to square meters? You need to know how to do Conversions!

• Conversion of Length (a simple intro to conversion)
• Conversion of Area
• Conversion of Volume
• How to Convert Imperial to Metric
• How to Convert Metric to Imperial
• Metric US/Imperial Conversion Charts
• Unit Conversion Method
• Unit Converter

Temperature

How hot or cold is it going to be today? Is 40° Celsius nice weather? How about 40° Fahrenheit?

• Interactive Thermometer
• Conversion of Temperature - Celsius to Fahrenheit

Speed

• Metric Speed/Velocity
• US Standard Speed/Velocity
• Speed and Velocity

Direction

• Compass: North, South, East and West
• Direction Game
• Mazes

Units

• The "Unit" in Measurement
• Unit Price

Accuracy and Precision

• Accuracy and Precision
• Errors in Measurement