Doubling machine resources

This is a really fun way to teach doubling to your class. Simple print and laminate the large doubling machine (You may wish to enlarge this A3) and show children what happens as numbers move through the function machine. After completing this practically using whiteboards and concrete resources for counting id required, children can then move on to recording this in their books. The small doubling machines can be printed on to stickers or glued in.