In the past if a teacher wanted to make a number machine card they would have to sit down and think it all up them self. They would have to make sure it worked for example if a divisions came out to be a full number or not. With it taking such a long time to do all of this they might not feel like doing doing a different one for every member of the class so instead they will just do one that every body has and this is a problem because children tend to copy and they can't swap when the have finished. With Number Machine and new work sheet can be created in less than a second and so a different work sheet for every member of the class can be created in a few minutes.
