Grid of ten (usu.) squares drawn on the pavement using chalk or a handy stone. Kids hop or step from one square to another in a set routine. (ed: would like more rules and origins if anyone has something to offer please?)

Sophie helpfully wrote:

For Hopscotch, you throw a stone into one of the squares at random and then you have to hopskitch without using that square.For harder levels, throw in more stones.