The bean machine, also known as the Galton Board or quincunx, is a device invented by Sir Francis Galton to demonstrate the central limit theorem, in particular, that with sufficient sample size the binomial distribution approximates a normal distribution. [Wikipedia]
Ingredients:
- Printable
- Cork board (6″ x 11″, 1/2″ thick)
- White glue
- Pins
- Popsicle sticks (11)
- Straw
- Scissors
- Foam tape
- Round beads – 1/4″
STEP 1
STEP 2
STEP 3
STEP 4:
STEP 5:
STEP 6:
