Third graders use a Slinky, rubber bands, paper, coins and cups to experiment with weight and its relationship to gravity. They discuss their results and develop a consensus on conclusion statements derived from their experiments.

Fourth graders conduct an experiment to get them thinking about the invisibility of air, and to prove that air has weight.

Students order five weighted plastic eggs in order from lightest to heaviest.

Primary learners participate in activities that help them explain how different things are measured. They create their own access number chart.

Students order their classmates from smallest to largest foot length.  In this ordering their classmates from smallest to largest foot length lesson plan, students trace each of their classmates foot.  Students read a story...

Students examine how salt water is more dense than fresh water through experimentation with eggs.

The concept of air resistance is discussed in terms of why a heavier object falls faster than a lighter object when both dropped from the same height. In this discussion and animation, an elephant and feather are used as examples.

Do heavier and lighter objects fall at the same rate? Galileo hypothesized that objects fall at the same rate regardless of their mass. Complete this module to find out if Galileo was right by comparing position-time and velocity-time...

Students learn that it is incorrect to believe that heavier objects fall faster than lighter objects. By close observation of falling objects, they see that it is the amount of air resistance, not the weight of an object, which...