Maths Investigation - The River Crossing Problem (KS2)

This is a great investigation that builds so many rich mathematics connections. It is easily differentiated as the entry point is simple but more able pupils can extend right into algebra. I did this lesson with my Year 6 class, but it could be accessed by pupils across Key Stage 2. It supports the CPA approach to teaching maths as pupils realise that physically moving the ‘people’ (or rubbers, pencil sharpeners or whatever!) across the river (concrete) or using marks on paper (pictorial) really helps with this investigation. Whereas the higher ability pupils can move into the more abstract realm of writing a formula to predict how many trips are needed for x amount of people.

Includes lesson plan, a PowerPoint or SMART notebook file so that question can be displayed on the interactive whiteboard and a pupil sheet also with the question on. The lesson also has a starter activity, which is unrelated to the investigation but a nice starter nonetheless!