Circumference/diameter

Today we went out. After a task in Hasse Perssons book "Experiments with Mathematics", we practically learned how we are dividing the circumference of a circle with its diameter to get Pi. We did this by using a stick and a rope. Students were placed along the rope and had to count there steps in a full circle.Then they walked the distance to the pin, the radius. The radius we then doubled to obtain the diameter of the circle. When we met up in the classroom again and reflected and discussed, we were dividing the circumference by the value of the diameter and we all got the answer 3. 

We got this great practice outside!