How to Make an Adding Machine that Even Adds Roman Numerals

By Lee H. Goeller

Instructions for making a "machine" of egg cartons and marbles and for using it to add and subtract numbers of various bases and also Roman numerals. This description may be from another edition of this product.

• Format: Hardcover
• Language: English
• ISBN: 0152368345
• ISBN13: 9780152368340
• Release Date: October 1979
• Publisher: Harcourt
• Length: 64 Pages
• Weight: 1.74 lbs.
• Age Range: 7 to 10 years
• Grade Range: Grades 2 to 5