Other
Federal Highway Administration: Si (Modern Metric) Conversion Sheet
Very complete chart of conversion factors for English to SI (metric) unit measurements and SI (metric) to English unit measurements. Includes length, area, volume, mass, temperature, illumination, and force & mass (stress).
TeachEngineering
Teach Engineering: States of Matter
Students act as chemical engineers and use LEGO MINDSTORMS NXT robotics to record temperatures and learn about the three states of matter. Properties of matter can be measured in various ways, including volume, mass, density and...
Science Education Resource Center at Carleton College
Serc: Air Is Matter
It's difficult at times for younger students to realize that air has mass. Matter is something that has volume (takes up space) and has mass (*can be weighed). Air does take up space, even if we can't see it, and air has weight, even if...
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Comparing Densities of Different Liquids
This lab experiment has students observe and compare the density of five different liquids while measuring mass and volume.
Doina Popovici
Math Play: 3rd Grade Halloween Math Game
Be ready to smash the monsters by solving problems involving volume, mass, and time in this math game.
Disfruta Las Matematicas
Disfruta Las Matematicas: Medida
This unit could be used as supplementary material for a topic on measurements. It has good examples with illustrations and some interactive activities.
Texas Instruments
Texas Instruments: Jason: How Dense Is Salt Water?
Disappearing Wetlands: Explore the relationship between mass, density, and salinity by measuring the mass and volume of four saltwater solutions of increasing strength.