Montessori Preschool Busy Book for Toddlers. A handy, educational learning resources tool that COMES PRE-ASSEMBLED and ready to use straight out of the box! Ready to gift for 3 or 4 year old girls and boy. Suited for age groups 3+, 3-4 5-7 4-8. No need to waste hours setting up, so the little one can start playing and learning immediately!