All tied up
By: written by Claire Owen
Series: WorldScapes. Peru; WorldScapes
Publisher: ETA/Cuisenaire
Published: 2005
Place of publication: Vernon Hills, IL
Language: eng
Number of pages: 24
ISBN-13: 9780740642784
Subjects: Quipu; Juvenile literature; Ancient Mathematics
Description: Over the centuries, people have used many methods to record numbers. Read about the interesting system developed by the Inca people of South America--a number system without numberals.
Notes: Includes index.