Other
Nanozone: Nanoconverter
Use the nanoconverter to convert inches, feet, or miles (or millimeters, centimeters, or meters) into nanometers.
Other
Nanozone: How Small Is Small?
Learn about the relative size of nanometers, micrometers, centimeters, and meters by arranging objects, such as red blood cells, hair, and a penny, from smallest to largest.
Math Is Fun
Math Is Fun: Metric Area
The relationships between metric units of area are explained, with examples of how to calculate area.
Science Made Simple
Science Made Simple: Online Metric Converter
Practice converting English units of measurement to metric units using this tool.
University of Cambridge
University of Cambridge: Nrich: Watching the Wheels Go `Round and `Round
Use the formula for the circumference of a circle to solve the challenge of this problem. The solution is available at this one page website.
Math Is Fun
Math Is Fun: Metric Length
The different units used to measure metric length are described, with comparisons to real world objects. A wonderful number line also shows the relative sizes of things all the way from a quark to the universe in powers of ten.
CK-12 Foundation
Ck 12: Elem Math: Estimating the Metric Lengths of Objects by Image
[Free Registration/Login may be required to access all resource tools.] For this learning module, students must analyze the information they are given about the metric heights of three objects and answer questions that compare them....
Khan Academy
Khan Academy: Estimating Length (Mm, Cm, M, Km)
Practice estimating the length of real life objects using metric units. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Measurement: Metric Length Comparison
[Free Registration/Login may be required to access all resource tools.] Convert metric lengths to the same unit and compare.
Other
Science Made Simple: Area Conversions
This site, which is provided for by Science Made Simple, allows you to enter an amount into an area conversion calculator.
Calculator Soup
Calculator Soup: Cubic Yards Calculator
Use this calculator to calculate cubic yards volume for a variety of different areas. Enter measurements in US units or metric units. Calculate volume from your measurements in inches (in), feet (ft), yards (yd), centimeters (cm), or...