Math Is Fun
Math Is Fun: Us Standard Mass (Weight)
Students learn about standard units of mass. Topics include ounce, pound, and ton. Practice problems are included to check for comprehension of the concept.
Quia
Quia: Customary Measurement
Here are three activities--concentration, matching, and flashcards--to help learn or review the units of customary measurement.
Other
Conversions for Weight Measurements
This site allows you to convert weight/mass measurements. For example converting tons to grams. CCSS.Math.Content.3.MD.A.2 Measure and estimate liquid volumes and masses of objects using standard units
CK-12 Foundation
Ck 12: Measurement: Identification of Equivalent Units of Weight
[Free Registration/Login may be required to access all resource tools.] Convert and identify equivalent customary units of weight.
Other
Metric Conversion Calculator and Charts
Metric Conversions offers online calculators for making conversions, downloadable tables in many types of metric conversion (pdf format), and free conversion tools to put onto your website or dynamic pages.