I had heard such great things about the book, and decided it would be wrapped under the tree for four year old Ellie. She seemed to like it, but to be honest it sat in a pile of presents for about a week before we cracked it open together.
Basically, the book features colorful dots on each page. The reader is asked to do something interactive with the dots that causes a change in the dots on the next page. For example "rub the dot on the left gently," which causes the dot to "turn" red on the next page.
This turned out to be the perfect book for my wiggly girl! She was belly-laughing by the end and shouting, "This is ridickerous, Mamma. Ridickerous!"
She's just old enough to understand the actions in the book (counting, left and right, etc.), but young enough to really think there's magic involved.