Best Gift for 8-14 yr girls & boys: Build, Play, Learn | 156 Parts | BUILD TIME: 150 min | STEM Concepts: Geneva Mechanism,Ratched Pawl Mechanism & Drop Cam Mechanism. Screen Free Fun : Longer Constructive Activity,Multiple Gameplays,Core STEAM Learning and Superior Engagement Time Per Rupee than other DIY toys. Children Learn Best Through Play: Smartivity helps in Brain Development of your child with STEAM Concepts based game/toy with Real Moving Parts & MECHANICAL ACTIONS. Trusted By Parents, Loved By Children in 24 Countries (incl USA, Europe): Non-Toxic & Safe. Tested in global labs. Exceeds global toy safety standards. India's Global Brand. Designed by IIT Alumni in Collaboration With Children: Evaluated and approved for Construction, STEAM Learning and Fun Quotients by Smartivity STEMNinjas..