Environments or models where you can change velocity, gravity and so-on. Examples include the battery, the electric motor, and the photocopier. Pupils can browse pages and gain explanations of scientific principles. Terms such as electrons are described and a few working models - such as the mixing of coloured light are particularly useful, as well as being humorous. An inventors book shows who invented what and a history section shows the inventions on a time line.
Tutorial style look at forces with sections on motion, stability, pressure and more.
Of particular interest is the laboratory section where a few useful experiments can be performed. The experiments involve friction, gravity, stopping distances and Newton's second law. An all purpose encyclopaedia with surprising depth of information on many subjects. For example, a search for say, salt or neutralisation yields a good deal of detail. The pictures and words here might be used in worksheets or pupils projects, although the language level is around the age 16-18 mark.