I find that this often happens in barrels and poles. The girls hits a barrel or pole or thinks that she has hit one and looks back to see if it is still up. While she is looking back, she is either missing riding to the pocket of her next barrel or she is hitting the next pole. Always, tell your kids to keep their heads up and focus on where they are going. If they did knock over the barrel or pole, there is nothing they can do about it anyway.