Pay in 4 interest-free payments of $10.69 Learn more
Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
this puzzle is ideal for Christmas gifts
be/XLomsFfE62Q
Works best for 4 or more players and the more the better really
This puzzle and puzzle design are registered trademarks of The Sam Loyd Company and used by permission
Napier's Bones | Handmade Wooden Math STEM Teaching Aid family game night this puzzle is ideal forNapier's Bones is a handcrafted wooden reproduction of the multiplication aid invented by John Napier in 1617. Before calculators, students and tradespeople used the marked rods to multiply, divide, and find roots. The base set ships with two complete sets of rods (0 9), a storage base, a wood cover, and printed instructions with worked examples. Optional square root or cube root bone add ons at checkout. Includes: storage base, 2 sets of rods 0 9,
US$ 14.39
US$ 164.50
US$ 11.00
US$ 12.68
US$ 10.50
