Features: The Dalton board serves as essential physics demonstration tool, featuring strategically arranged pegs that guide falling beads into measurable statistical patterns. This hands-on model transforms abstract theories into tangible classroom experiences. Get students' curiosity by showcasing real-time formation of normal distribution curves. As beads through the obstacle matrices, complex statistical concepts become vividly observable and intuitively understandable. While creating memorable learning moments, it systematically develops data analysis skills and experimental reasoning capabilities. Specifications: Component: Plastic+Metal Size: about 17x12x12cm/6.69x4.72x4.72'' Package Includes: 1 Set Dalton Board Probability Demonstration Model note: Please allow 1-3cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.