abacus

Tells the development and history of the abacus, includes instructions for building your own abacus and how to use it.

Discusses the development and evolution of numbers in different cultures throughout history, looking at number sequence and language, written numerals and computations, and the origins of the modern decimal system.

Describes the development of the abacus, slide rule, and calculator and demonstrates their uses.

A young Chinese boy helps his father count the warlord's vast treasures by using beads threaded on a branch. Includes a brief history of the abacus and instructions for making one.