Understand what it takes to control planes safely. The first lesson in a series of six introduces the class to the air traffic control situation. The pupils develop their understanding of units used in air travel, then learn how to read...

We can't see most gases and we can't see things at the molecular level — but that's about to change! A simulation shows pupils the activity of molecules in a gas. The simulation allows scholars to vary the volume, heat, and...

Twenty-four questions about matter, the states of matter and the properties of matter make up this interactive online worksheet. Your class will determine the volume of water, the shape of water and the shapes of matter.

In this conductors and insulators activity, students answer 11 questions about electrical resistance, conductance, gauge scale, and breakdown voltage.

In this conductors worksheet, students complete 15 problems about conductance, strain gauge, and electrical resistance of conductors.

In this online interactive submarines worksheet, students respond to 11 fill in the blank and multiple choice questions regarding the information included in the provided paragraph.

Physics tutorial on measuring the speed of sound in dry air. An interactive form allows the student to practice solving problems involving the temperature dependence of the speed of sound.

Great animations showing how sound is produced.