Circulos Y Calendarios / Circles and Calendars (La Otra Escalera / La Otra Escalera) (Spanish Edition) [Spanish]

By Libia Barajas Mariscal

Although we cannot see it, many people think that time has a shape. Some say that it is like a circle and others claim that it seems to be a direct line. This dazzling book intersperses historical and cultural information with the discoveries and data gathered by astronomers and mathematicians who have made the measuring of time possible.

• Format: Paperback
• Language: Spanish
• ISBN: 9685920710
• ISBN13: 9789685920711
• Release Date: May 2006
• Publisher: Ediciones Castillo S.A. De C.V.
• Length: 24 Pages
• Weight: 0.40 lbs.
• Dimensions: 9.8" x 0.3" x 10.0"
• Age Range: 7 to 9 years
• Grade Range: Grades 2 to 4