First, a confession: When my parents sent me off to brush ... the sink, rub a dab of toothpaste on my front teeth, and stall long enough to make it seem like I had brushed. Only in a child ...
Let children act out brushing teddy's teeth too, this will help to reinforce what they're doing and why. Repeat instructions over and over to help what they need to do sink in - things like 'up ...