P5 have been learning to use diagrams to help them with their problem solving and investigations this term. They used pictures and moved them around to physically solve the tricky problem. 

A farmer must transport a fox, a goose, and some grain across a river. She has a boat which can only carry herself and one other thing. If the farmer is not present, the fox will eat the goose. If the goose and the grain are left together alone, the goose will eat the grain.

How many trips will it take?__________________________