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...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Pendulum Lab
Manipulate the mass of a weight and the length of string in this interactive pendulum simulation. Change the speed, friction, and gravity to make the pendulum swing change as measurements are displayed on the screen. Younger students can...