Made of plastic, ensuring long-lasting use and stability during experiments. The Galton board demonstrates the principles of probability and statistics through a hands-on experience. The transparent acrylic panel allows for clear visibility of the ball's path and the resulting distribution. Accurately measured steel balls enhance the of the probability distribution observed. The design aligns with the normal distribution curve, making it an excellent educational tool for understanding statistical . The Galton board is an engaging educational tool that visually represents the principles of probability and statistics. As balls drop through a series of pegs, they randomly choose paths, ultimately collecting in a grid below. This process illustrates the binomial distribution, and with a sufficient number of trials, the results converge towards a normal distribution. The clear acrylic design and -engineered steel balls easy to observe and understand these statistical in action. Color: Red Material: plastic Package Contents: 1*Galton Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.