You don't need a scale to determine weight. This activity provides a way to use the concepts of air pressure and surface area to determine the weight of a vehicle by calculating the amount of weight each tire supports.

Second graders choose the appropriate measuring tool by discussing a tool to measure contents in desks. They then use a scale to weigh contents in desks. Next, they study standard units of measurement by writing down the weight in...

Students identify the different types of measurements used in industry. In this technology lesson, students investigate how much power CEENBoT has. They collect data and graph results.

Make breaking a leg a less troublesome experience. Groups brainstorm designs for crutches that have devices that help carry items. They build prototypes of their devices to test out their designs.