Once your kid knows how to clean his/her whole mouth using simply brushing, now it's time to improve the cleaning. Please note that your kids motor skills need to be enough developed to be able to draw a circle.
Circular brushing is like drawing circles on your teeth and slowing moving in such a fashion along the teeth. This technique is only used for the outside of the teeth, which makes it even a bit easier to learn. Don't forget to set MyTeeth to "Circular Brushing" in it's settings. This will also show the new technique for the inside of the teeth Red-To-White.