Children learn best through play: smartivity helps in brain development of your child with steam concepts based games and toys with real moving parts and mechanical actions! Smartivity adds the excitement and fun to the scientific toy and stem category that kids and parents alike want and are looking for! Stem learning, quality and great value, fun extended game play, easy builds and trophy-type accomplishment. Designed for learning fundamental principles of stem/steam, our kits are made from high-quality, re-engineered, laser-cut wood. All smartivity® products are recyclable, safe, non-toxic, and sustainable! Mess-free assembly using rubber bands—no glue required! 3 months of learning, building and playing!  Smartivity summer of stem activity kit creates opportunities for stem learning and play throughout the summer with award winning smartivity kits. Three certified smartivity® stemkits, the hydraulic plane launcher, pinball machine, and music machine will have them learning, building and playing all three months of summer!  Smartivity hydraulic plane launcher — designed for learning fundamental principles of hydraulic systems, aerodynamics and scissor mechanisms.  Smartivity pinball machine — build a fully-functional pinball machine! Learn all about levers, momentum and energy transfer.  Smartivity music machine — build your music machine and create your own symphony! develop creativity, analytical and motor skills.  # Pieces In Set: 175 Learning Skill: Motor Skills Recommended Ages: 8 Years And Up Measurements: 16 Length/Inches Assembly: Assembled Base Material: 100% Plastic Care: Wipe Clean Country of Origin: Imported p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 15.0px Calibri; -webkit-text-stroke: #000000} span.s1 {font-kerning: none} WARNING: CHOKING HAZARD – small parts. Not for children under 3 years.