Fangrui Product Details Statistical Tools: Galton Board Is A Professional Tool For Analyzing The Statistical Distribution Of Molecular Velocity And Studying The Model Of Random Phenomena. It Is Used As A Teaching Tool To Study The Model Of Random Phenomena, The Law Of Statistical Distribution And To Explain The Rate Of Motion Of Gas Molecules. Demonstrate The Statistical Distribution: By Rotating The Galton Board, The Steel Ball Bounces Randomly, Forming An Approximate Bell-shaped Curve, Which Allows You To Observe And Analyze The Velocity Distribution. Unique Teaching Gift: Its Compact Size Makes The Galton Board An Ideal Addition To Any Desktop And A Unique Gift For Physics Enthusiasts. How To Use: Turn The Apparatus Upside Down, Pour All The Balls Into The V-groove, Insert The Insert Plate, Then Flip It Over So That The V-groove Is On The Upper Part Of The Apparatus, Pull The Insert Plate To Make The Balls Fall, The Collisions With The Peg Arrays Will Be Randomly Spread Out, The Pegs Are Equidistant Left And Right From Each