Try to balance Tetris like structures whilst overcoming the constraints of gravity.
Nice fill in game suitable for schools - although watch the initial advertising.
At this website produced by NASA and NOAA, students in grades 4-8 learn about weather through interactive games, illustrated text, and fun facts. Includes How and Why sections as well as weather folk lore. Weather jokes are dispensed by a Joke Machine. Teacher materials are available.
Windows to the Universe is a user-friendly learning system covering the Earth and Space sciences for use by the general public. The site includes a rich array of documents, including images, movies, animations, and data sets, that explore the Earth and Space sciences and the historical and cultural ties between science, exploration, and the human experience. The site is written in three reading levels approximating elementary, middle school and high school reading levels. These levels may be chosen by using the upper button bar of each page of the main site. A Spanish version of the site is available.