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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
Works best for 4 or more players and the more the better really
Great For:
be/XqzhXJLaKNc
Each set ships with the trick explained
this puzzle is ideal for Christmas gifts
Napier's Bones | Handmade Wooden Math STEM Teaching Aid family game night Works best for 4 orNapier's Bones is a handcrafted wooden reproduction of the multiplication aid invented by John Napier in 1617. Before calculators, students and tradespeople used the marked rods to multiply, divide, and find roots. The base set ships with two complete sets of rods (0 9), a storage base, a wood cover, and printed instructions with worked examples. Optional square root or cube root bone add ons at checkout. Includes: storage base, 2 sets of rods 0 9,
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