A complete lesson for lower KS2 to deepen understanding around the process of multiplication and the fact that it is not commutative. The lesson comprises a ‘diamond 9 starter’ that could be completed in pairs/groups. There are then some worked examples in the powerpoint using ‘Singapore bar’ representations and arrays to allow two different multiplication statements to be shown. The worksheets are differentiated 3 ways, with the ‘3 chillies’ sheet including a reasoning challenge at the end.