Use this website to assemble different types of clocks and create printouts for classroom use. You can generate printouts of clock faces, faces with numbers, clock parts (numbers and hands), as well as worksheets where students draw...

Aristarchus of Samos invented this type of sundial. It is in the form of a concave bowl, but is not like the usual sundial because it is hemispherical in shape, rather than circular.

A brief history of the development of barometer is given. Pictures of historical types of barometers are shown. Links to related topics.

Discover the different types of figures you can make by moving n numbers of minutes around a clock.