Super Teacher Worksheets
Estimating Weight
How much does a seagull weigh? Kids estimate weight by choosing the closest option out of three, using ounces, pounds, and tons.
McGraw Hill
The Units of the English System
Go from feet to inches to yards and back again with this notes and worksheet combo resource. Several pages of examples regarding unit conversion of the English system are given, followed by different pages of problems. There is a nice...
Math Slice
Math Slice: Weight
This resource allows students to practice converting metric or customary units of weight. Students are able to select parameters that include metric or customary units and difficulty level. There are ten problems with instant feedback...
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
Quia
Quia: Customary Measurement
Here are three activities--concentration, matching, and flashcards--to help learn or review the units of customary measurement.