In this demonstration, students observe what happens to activated glow sticks when they are submerged in water at three different temperatures: cold, room temperature, and hot. Students will use these observations to discuss the type of light emission associated with glow sticks. Alternatively, the activity could be performed, with the appropriate safety considerations, by students.
Osmosis is the process by which the concentrations of two solutions, separated by a selectively permeable membrane, equalize by the movement of a solvent such as water. This demonstration shows that... read more
In this unit plan, students learn to name the six different kinds of simple machines and how they make work easier and more enjoyable for people. They will also learn to design, build and test an... read more
In this demo, a polyethylene rod is charged by rubbing with wool. The charged rod is then used to bend a stream of water flowing from a tap. Different substances have different attractions for... read more