Kodomo Challenge This is a set of animal wood blocks and a wood puzzle. It's a series designed for playing with numbers and shapes, encouraging thinking with hands and minds. Thank you for looking. This is a rather old item. The box is tattered and dirty, so I will ship the items without the box. As you can see from the images, the book also has stains and tears. The wood puzzle was heavily soiled and had scribbles, so I will only include the "Let's try making it!" page. See images 11-17.