There's a discussion of 3-year-olds and their sleep habits below this, so scroll down when you're done reading!
As school lets out for the summer (here on the North American continent), kids are leaving their books and lessons behind for long days of running around and getting wet and eating ice cream. Which I think is as it should be. But one effect of having an extended summer vacation is that kids lose some of the skills they learned in school because they're not being reinforced over the summer.
Teachers see it in the fall--kids who were reading at one level in June may be reading at an easier level in September, just because they aren't practicing as much over the summer. The same happens with math, science, social studies, etc. If you don't use it, you lose it.
If you're looking for an easy way to keep your child's math skills up over the summer, DreamBox (our sponsor!) is the answer. Kids love the games, and giving them 15 minutes of playing time a few times a week will keep their skills up over the summer (while also giving you some quiet time or a good activity for the transition times of the day). Free trial and special deal for Ask Moxie readers in June, so check it out.