Meet the Quincunx: a wonderful tool for teaching statistics in a more visual fashion. It has a hardwood construction, measuring 28 in x 14.5 in x 1.5“. It has 3 gates to show 3 different distributions simultaneously. The Quincunx comes with 500 beads (25 beads per channel). It has adjustable pin block to demonstrate different levels of variability.
More gadgets like this: here
The bad news? Something like this doesn’t come cheap.
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