Have you heard of the scientist John McAdam? In the late 1700s he made roads much better for people by inventing the process known as macadamisation. Y2 enjoyed recreating this by building a small section of road. First we put large cobbles and rocks down to create a strong foundation. Next we put a layer of smaller stones over the cobbles. After that we filled in the gaps with coarse gravel. Finally we used a layer of sand in place of the fine gravel topcoat used by John McAdam. Everyone had a go at firming the final layer down, just as the engineers had done hundreds of years ago. It certainly felt very firm and smooth underfoot!