This episode introduces the idea that numbers can split (partition) into parts and the parts can join again to form the whole.
A number can be partitioned in different ways but the whole remains the same.
Watch the episode of NumberBlocks. First ask the children what they noticed and allow them to talk to you.
Which two NumberBlocks could make number 3? (2 and 1)
Which two NumberBlocks could make number 4? (2 and 2 or 1 and 3)
Which two NumberBlocks could make number 5? (3 and 2, 4 and 1, 2 and 2 and 1)
Us the pictures below to help.