How did the environment make them ill?

This covers two lessons and has a progress check that connects them. At present I have had to scan in the art work in two halves, but I hope eventually to be able to have it completed whole, so creating a clearer image for use. (It's my artwork!) The idea here is to have the pupils understand what had changed between the Romans and the Middle ages and why. They should also know that this was not universal across the country or the time period as some pupils seem to think.