The Rabbit Problem, written and illustrated by Emily Gravett, Simon & Schuster, $17.99, ages 4-8, 32 pages. Here's a problem that will overflow your kids' minds and have them imploring, "Please, please, please, can I have that problem too?" Standing before a blackboard that fills out the cover of Gravett's hilarious book, a rabbit with chalk in his paw ponders the greatest question known to rabbits: How many of us can we get from just two of us in a calendar year? I.e. The Rabbit Problem. "If a pair of baby rabbits are put into a field, how many pairs will there be: 1) At the end of each month? b) After one year?" Gravett elaborates inside the cover. Well, let's see. First we'll have to jump into the rabbit hole that Gravett has thoughtfully cut into the back of the first page. And then, we'll have to watch the months roll by. In this charming ode to rabbit fertility, whimsically set up like a calendar (with actual holes for hanging the book right through its hard covers), Gravett takes us through each of the 12 calendar months to find the answers.
