Besides the sticker book I blogged about below, I found these great non-fiction books in my library for Ricky. He knows his shapes - even octogon, pentagon, trapezoid - I love it! But these books actually take day-to-day objects and show how they are shapes as well. In the triangle book, there are pictures of ice cream cones - as shown above, mountains, and street signs. Even though your child knows his or her shapes, these books are a good reinforcement of the shapes we see every day. Now when we are out doing errands, I am enjoying Ricky pointing out various shapes he sees out in the public.