Primary 5F enjoyed taking their maths outdoors today for empty classroom day. They became tree detectives by working in pairs or trios to calculate the ages of a variety of trees around the school grounds. Firstly, they identified the species of tree by looking carefully at the leaves and after that, calculated its age. Primary 5 were able to work this out by measuring the circumference of the tree and then dividing this number by 2.5. The average age of the trees surrounding the school is 30 years old.