On this interactive site students learn to use various units of mass to solve problems and put objects in order by their mass.

This slide and audio book shows how to relate mass to a number of particles by using many formulas, examples, and real life scenarios. View the weighted average calculations, Avogadro's number, the atomic mass of carbon, and molar mass.

Explore the societal stigma that accompanies people who are overweight, and research current medical thinking on "ideal weight." Identify how the perception of body image can lead to eating disorders.

If you like tackling formulas, then this math challenge is for you. See if you can calculate Helix's BMI (body mass index) and find out if his health is at risk. A one page NCTM Math Challenges for Families activity that engages learners...

Catch the waves with Pete and find the mass of the items on the beach.

This learning module discusses the definition of matter and what mass and volume measure. Module includes pictures, videos, and review questions.

Students explore the meaning of density and use their math skills to graph mass/volume data, write an equation for a line, and interpret the slope of the line. Students also find the density of two unknown mineral samples and use those...

[Free Registration/Login Required] This flipchart can be used in Everyday Math for third grade. It involves metric and U.S. Customary weights and measuring different objects.

Math glossary and terms on units of measurement for kids. Learn the definitions used in this mathematics subject such as time, temperature, length, and distance.

This site gives an explanation that distinguishes mass from weight. It distinguishes between the two types of mass (inertial and gravitational), and gives the equations for computing both.

Why do hot air balloons float? This resource from the NOVA Web site offers a series of interactive activities that illustrates the physics of hot air balloons.

[Free Registration/Login may be required to access all resource tools.] For this learning module, students practice identifying the heaviest or lightest metric weight from the choices given. Includes video demonstrating a sample problem...

Explore the "intelligent floor," which contains sensors that can track movements, and emulate the weighing technique associated with this technology. Explore the relationship between volume and mass and the difference between accuracy...

[Free Registration/Login may be required to access all resource tools.] For this learning module, students are shown a set of weight values and must decide how to order them based on how heavy or light they are. Includes video...

[Free Registration/Login may be required to access all resource tools.] A practice quiz where students must add and subtract mixed metric units of weight.

[Free Registration/Login may be required to access all resource tools.] For this learning module, students practice converting kilograms and grams into just grams. Includes video demonstrating a sample problem [0:45] and a set of...

What is mass? What is weight? Illustrated discussion of mass and weight including how they are measured.

Students learn about weight by building a spring scale and observing how it responds to objects with different masses.

[Free Registration/Login may be required to access all resource tools.] Choose the appropriate customary units of weight or capacity given various measurement situations.

Could the location of the Olympic host city have an effect on weightlifting events? This activity provides an interesting context in which to engage with weight, mass and gravitation, and is aimed at A-level students (grades 10, 11, and...

Grams, kilograms and tonnes are explained, and real life examples are given for each.

Read, brainstorm, drag objects, erase to reveal answers, and move weights on a balance scale to learn about forces, mass, gravity, weight, and balance in this activity created by SMART.

Explanation of the differences between mass and weight.

In this activity, students apply what they have learned about weighted averages, isotopes, and systems of equations to a new situation - coins in a sealed container. They learn some historical information regarding the composition of...