Build New Preschool Skills: Kids solve preschool math problems as they hammer in their Number Nails and build their kid-sized houses in this math game for kids! Test your math skills by being the first to solve the math problems and hammer in the correct “nails” to build your house. This hands-on fine motor math game features multiple levels of play for different ages—build a birdhouse, a doghouse, and more! Details: 3.5" x 3" x 3.75" house size 102 pieces Counting, sequencing and fine motor skills For ages 4 and up Contents: 2 house frames 2 hammers 25 plastic nails 1 set of game cards