This math-based building game helps preschoolers develop early math skills by solving problems as they hammer Number Nails to construct child-sized houses. The set includes kid-friendly hammers and nails sized for small hands to support fine motor development, hand-eye coordination, and grip strength. Designed for both individual and competitive play, it comes with two houses and two hammers for solo or two-player math challenges. The game is suitable for children ages 4+ and focuses on foundational math concepts and motor skill development. As part of the Learning Resources collection, it offers educational play opportunities suitable for gifting occasions.