CK-12 Foundation
Ck 12: Measurement: Comparison of Metric Measurements
[Free Registration/Login may be required to access all resource tools.] Compare and order given metric units of measurement.
Other
Bipm: Si Brochure
Here's where to obtain your official brochure on SI, from the people who derived it. Little info at this site, except how to order an official brochure (and its cost). Or you can download a copy free.
Colorado State University
A Chronology of the Si Metric System
The U.S. Metric Association offers important dates in the history of the metric system of measurement, including the fact that Thomas Jefferson proposed a decimal-based measurement system for the United States in 1790. Site includes...
E-learning for Kids
E Learning for Kids: Math: Market Place: Mass
On this interactive site students learn to use various units of mass to solve problems and put objects in order by their mass.
Other
Ode: Seventh Grade Achievement Test (Practice Test) [Pdf]
Half-length practice test for the third grade OAT (Ohio Achievement Test). The test includes 17 multiple-choice and 4 open-response questions dealing with topics such as number sense (order of operations, ratios), measurement (metric...
National Council of Teachers of Mathematics
Nctm: Figure This: Math Challenges for Families
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...