Karen Cermak-Serfass

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
Singapore Math - Mental Math Level 2 Workbook for 3rd Grade, Paperback, 64 Pages, Ages 8-9 with Answer Key	978-1-936O24-O9-4 (1-936O24-O9-8)	2011	Frank Schaffer