In our whole school science investigation today we tested which soap would be the slipperiest out of a bar of soap, liquid soap, washing up liquid and a bar of soap with some water. We used a ramp and board rubbers on a mini slide and measured how far the board rubber travelled along the soapy surface! It was very fun and we ensured it was a fair test by using the same ramp, the same board rubber and using different soaps as our changing variant.