Millie's Math House Seven fun-filled activities that feel like play for ages 3-7. Learn about numbers, counting, addition, subtraction, patterns, problem solving, size, geometric shapes, and more. Count critters, build mouse houses, create crazy-looking bugs, make jellybean cookies for Harley the Horse, and find just the right shoes for Little, Middle, and Big! Windows XP, Vista, 7 (32-bit only), 8 compatible