I free handed the bus and then I made extra wheels and put them on with a brad. So this can actually be used for several different activities I use it to play an addition game. I have one child spin the front wheel and another child spin the back wheel and together they have to figure out the sum of the two numbers together. The kids love it and they love the team work! One of them this year says this is great because when I use a friend I have 10 extra fingers to use! Gotta love Kindergarten!