Today we will be planning an investigation. The big question is, How does shape affect the rate an ice cube melts? Have a think and jot down notes on how you might answer this question. There is a scaffold sheet to help you.
The following website briefly explains a fair test
A fair test is a test which controls all but one variable when attempting to answer a scientific question. Only changing one variable allows the person conducting the test to know that no other variable has affected the results of the test.