Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Lesson: An Introduction to Estimation and Measurements
Pancakes anyone? Students explore estimation and measurement by learning how to make pancakes. A hands-on lesson designed for students in grades 3-5 where students are engage in hand-on experiences involving measuring volume, converting...
Khan Academy
Khan Academy: Estimating Mass (Ounces and Pounds)
Practice estimating the mass of real life objects using US customary units. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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
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.