This site examines the specific difference between mass and weight in addition to length, temperature, and time.

A comprehensive guide for learning all about measuring weight with definitions, units of measurement, and conversion.

Students will use their knowledge of measurable attributes (length, weight, capacity) to compare two or more objects using one measurable trait or more than two measurable traits to compare if the objects have more, less, or equal...

For the majority of recorded human history, units like the weight of a grain or the length of a hand weren't exact and varied from place to place. Now, consistent measurements are such an integral part of our daily lives that it's hard...

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

A "President's First 100 Days" has become a barometer by which to measure the success of the rest of his term. George Washington had the added weight of launching our new nation in his first 100 days. Use this interactive timeline to see...

The concern over obesity in children in the United States is staggering. This site provides research and statistics along with suggesting ways to change the epidemic. Includes video.

Students work in teams to fill jars with a product that is uniform in weight or count. Lesson investigates how manufacturing engineers use weight scales and measurement to develop systems that can create consistent products.