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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
Dimensions: 16
It's quite tricky
Creative Crafthouse can laser engrave a name or a short message on the side of the base
Such a dilemma
Napier's Bones | Handmade Wooden Math STEM Teaching Aid homeschool math game Dimensions: 16Napier'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,
