NIKOLATOY® Galton board normal distribution model Size:Big 【VERSATILE USE】USB charging port and

【VERSATILE USE】USB charging port and wireless charger can charge up to 3 devices at the same time

Precision casting and ingenuity

walking beam pump

and its cover can be opened to allow learners to see the structure inside more clearly

NIKOLATOY® Galton board normal distribution model Size:Big 【VERSATILE USE】USB charging port andDescription INTRODUCTION TO GALTON BOARD Place a small round glass ball with a diameter slightly smaller than the distance between two nails at the entrance. As the ball descends, it rolls down to the left or right with a probability of 1 2 after hitting the nails, and then touches the next layer of nails. Continue like this until you roll into a grid on the bottom plate. Continuously dropping numerous small balls of the same size from the entrance,