The board book 'First Numbers with The Very Hungry Caterpillar' is the perfect first introduction to colors for children aged 2 and up. Each page features a large, sturdy cardboard flap with a peek-through window to reveal what is hidden behind it. Children can view the colors of a red strawberry, a blue octopus, a yellow sandcastle, and, of course, a green caterpillar. The Very Hungry Caterpillar is the most famous and beloved character of author and illustrator Eric Carle. Although the iconic picture book of the same name was published more than 50 years ago, the classic is still found on many people's bookshelves. And that is not surprising: the bright collage illustrations, together with the cheerful story, are still a joy to read (or reread).