Addition and subtraction within context of a Rainforest Expedition

A set of 4 differentiated booklets that we created for year 4 within the context of our rainforest topic. The opening letter inside each booklet sets the budget that the group had. Lower ability and very lower ability had prices in pounds, leading to multiples of 10p for the luxuries. Middle and higher ability had pounds and pence. The idea was that, within their budget, they had to buy 1 of each essential and spend any leftover budget on luxuries. It prompted such good engagement and enthusiasm within my class that the lesson was graded Outstanding (in old Ofsted terms). It could easily be edited but as it took us ages, I feel others should get some use of it too.