Which roller will win the race?

We had a problem.  We were using the rollers in Te Kakano and rolling them around the classroom.  We were a bit loud and the rollers were hitting some of the creations the children were making.  When Mrs Johnson asked us what was our play about we didn't really know but we were having fun!  Mrs Johnson suggested we take the rollers outside.

We had an idea of having some sort of competition to see whose roller could go the furthest.  We soon discovered you had to try to roll the roller straight otherwise it would veer off into the curb.  We also learnt that if you try to roll it to hard it spins.  We used chalk to mark where our roller stopped.