$Napier's Bones Wooden Math Puzzle | STEM Learning Tool | Handmade Montessori Toy | Personalized Custom Teacher Gift with Laser Engraving - Creative Crafthouse$
$Napier's Bones Wooden Math Puzzle | STEM Learning Tool | Handmade Montessori Toy | Personalized Custom Teacher Gift with Laser Engraving - Creative Crafthouse$
$Napier's Bones Wooden Math Puzzle | STEM Learning Tool | Handmade Montessori Toy | Personalized Custom Teacher Gift with Laser Engraving - Creative Crafthouse$
$Napier's Bones Wooden Math Puzzle | STEM Learning Tool | Handmade Montessori Toy | Personalized Custom Teacher Gift with Laser Engraving - Creative Crafthouse$
$Napier's Bones Wooden Math Puzzle | STEM Learning Tool | Handmade Montessori Toy | Personalized Custom Teacher Gift with Laser Engraving - Creative Crafthouse$

Napier's Bones | Handmade Wooden Math STEM Teaching Aid

✓ In stock, ready to ship

$42.75

Add-ons

No Square Root Bone Cube Root Bone Both

Product variants

Add laser engraving (+$4.00)

Delivery and Shipping

All standard orders normally ship within 1 business day.

Custom orders normally ship within 2 business days.

Description

Napier'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, wood cover, and instructions sheet.
Dimensions: 7.5 x 7.5 x 0.75 inches.
Variants: base set, +square root bone, +cube root bone, or both.
Use case: STEM education, Montessori math, homeschool, math classroom, teacher gift.
Engrave up to 45 characters on the case.
Companion: Genaille-Lucas Rulers for visual multiplication.

Handcrafted by Creative Crafthouse in Hudson, Florida.

Personalize it!

Add a personalized laser engraving to your puzzle or game.

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Payment & Security

Payment methods

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Product Specifications

Dimensions: 7.5 × 7.5 × 0.75
Materials: Wood
Age Range: Kids (6-8 years), Tweens (9-12 years)
What's Included: Storage base (1), Napier's bones rods 0-9 Set (2), Wood cover (1), Instructions sheet (1)
Gift Occasions: Christmas, Birthday, Holidays, Back to School
Personalization Available: Yes
Category: Educational Learning Tool
Availability: In Stock

Personalize It!

Did you know we can add a custom laser engraving to every puzzle and game? Well, we can. Add a personal touch to your gift with a name or message.

Personalized laser engraving

a puzzle being laser engraved with personalized text by creative crafthouse

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Frequently Asked Questions

How do Napier's Bones work?

Each rod is engraved with a multiplication table. Line up the rods for each digit of one number, then read off the partial products along the diagonals and add. The instructions sheet walks through worked examples for multiplication, division, and roots.

What's included in the base set?

Two complete sets of rods (0-9), a storage base, a wood cover, and a printed instructions sheet. Optional square root or cube root bones can be added at checkout.

Who was John Napier?

Scottish mathematician (1550-1617) who invented logarithms and published this rod-based calculation aid in Rabdologiae in 1617. The 'bones' name comes from the ivory rods of the original sets.

Will my students or homeschooler get use out of this?

Yes. Napier's Bones is widely used in Montessori, homeschool, and middle-school math classrooms for hands-on practice with place value and the multiplication algorithm. The wooden rods make abstract math tangible.

Can I personalize my Napier's Bones?

Yes. Your Napier's Bones can be personalized with a custom laser engraving, up to 45 characters on the wood case at no extra charge, set at checkout. See our laser engraving page for details and examples. For a custom logo or artwork, request a quote for custom work.