A simple division investigation that asks pupils to show what happens when you divide.
Pupils make whole squares to represent dividing by 4. You will need to make the link to the calculation explicit. Pupils will hopefully be able to see from the investigation what it means to make the whole and what the remain represents.
Pupils can then start to reason why the remainder can never big bigger than what you are dividing by. They also look for a pattern in the remainder too.