Calculating Bones

When John Napier, a famous mathematician, invented his “Bones” or “Rods” in the early 17th century, modern calculating was born. With this simplified recreation, students can multiply large numbers quickly, with little effort and no electricity!

Grades covered: 3 through 12
Curriculum Topics: Multiplication, History of Math, Technology

Standards

Idea Sheets are cross-referenced to subjects listed in the Common Core, Next Generation Science Standards, and California Content Standards.

Categories include:
  • Grades 3-5
  • Grades 6-8
  • Math
Tags: Social Studies, Problem Solving, Multiplication & Division
Subjects covered: Social Studies