❤️Through grabbing the knob and learn to fit the puzzle into the right slot, kids learn hand-eye coordination, fine motor skills & early educational knowledge. ❤️Cognition of colour, shapes, words, alphabets, number and more (for example animals or occupation) became much more easier, fun & memorable ❤️Especially when kids involve in interaction with 3D Puzzle but not only words printing on flat 2D books. ❤️This also cultivates the kid's observation ability & concentration.