Color by number pages are a great way to teach your kids or students basic number recognition, how to use a legend, and it will give them the opportunity to work on their fine motor skills. Features: - Sandbox coloring - Number coloring - Pixel coloring - A free coloring book app for all ages, not only coloring for adults, but also for children, it’s a coloring game to play with your kids! - A coloring app with new images and illustrations coming each week - Perfect relaxing way to become the master of your own mind. -Sandbox number coloring have many interesting pixel pages and number books for you to coloring.