Coins, coupons, and combinations
Subtitle: the number system
By: Karen Economopoulos and Susan Jo Russell
Contributors: Russell, Susan Jo; TERC (Firm)
Series: Investigations in number, data, and space
Publisher: Dale Seymour Publications
Published: 1998
Place of publication: Menlo Park, Calif
Language: eng
Number of pages: 178
ISBN-13: 9781572326545; 9781572322158
Subjects: Mathematics; Study and teaching (Elementary)
Notes: "Developed at TERC, Cambridge, Massachusetts."

"Grade 2, also appropriate for Grade 3".