Smartivity Mechanical Xylofun Music Machine

Best Gift for 8-14 yr girls & boys: Build, Play, Learn,237 Parts,BUILD TIME: 150 min,STEM Concepts: Vibrations and Harmony,Ratched Pawl Mechanism & Momentum Transfer. Children Learn Best Through Play: With Smartivity, your child constructs a STEAM Concepts based game/toy with Real Moving Parts & MECHANICAL ACTIONS. Easy,Age-Apt Instruction Book: One-Step-Per-Page, Big Pictures, MODULAR ASSEMBLY for self-paced construction. Minimal adult involvement