Students probe the dynamic weather changes through several hands-0n activities in this seven lessons unit. The hydrologic cycle, clouds, atmosphere, air movement, fronts, and forecasting form the components presented in this unit.

Take young naturalists on an exploration of the world's tropical rainforests with this extensive collection of lessons and activities. Whether its creating leaf and flower prints or investigating the absorption spectrum of...

Students examine the year's cycles by observing the four seasons, their distinctive weather patterns that affect our activities and the weather changes that each brings. The fourteen lessons of this unit offer a good opportunity for the...

Students canvass the water cycle in the seven lessons of this unit. The processes of the water cycle and the cyclical nature of water is emphasized inthis unit.

As the Earth's surface temperature gradually rises, it has become vital for us to predict the rate of this increase with as much precision as possible. In order to do that, scientists need to understand more about aerosols and clouds....