Investigating forces and mechanisms.

This afternoon, Year 5 were challenged to make a working shaduf.

shaduf, also spelled shadoof, is a hand-operated device for lifting water, invented in ancient times and still used in India, Egypt, and some other countries to irrigate land. Typically it consists of a long, tapering, nearly horizontal pole mounted like a seesaw.

They had to use their knowledge of forces and mechanisms to investigate the best way to build one with the materials available…