As part of our measurement topic, 3OB have started to learn about finding the perimeter of 2D shapes. Today, we discussed what the word ‘perimeter’ means and how you can calculate it. In groups, we then created our own 2D shapes and used a ruler to carefully measure the length of each side. Finally, we added the lengths together to find the perimeter in centimetres or millimetres. Take a look at our fantastic learning in action!