We can see the result of electricity  but not the process itself. The simulation compares electric circuits to a water tower and water wheel cycle. Young scientists adjust the height of the tower, the amount of resistance, and if...

Go with the flow! The eighth installment in a 13-part series has earth science students dive in to the world's system of ocean currents. The interactive illustrates the different types and depths of currents, how wind and gravity...

Explore how clouds are formed with the computer-based model in these interactive activities. Also learn about clouds part in the water cycle. Activity includes pre- and post-tests which can be saved and graded by the teacher.

The simulation shows the relationship between the inputs and outputs in the chloroplasts of plant, that can help explain how they convert water and carbon dioxide to glucose and water with the help of energy absorbed from light.