In Year 2 we are learning how to exchange ten units for a ten rod using Diennes rods and cubes. Today we had a mammoth game of making 30 using a dice and the rods and units! You have to roll the dice, collect that many units but then exchange ten units for a rod once you have 10. It took us a while to get the rules but then we played over and over to really help us our understanding-AND it was great fun!