Using tasks that require students to think deeply about problem situations and communicate their mathematical understanding helps teachers determine students' levels of proficiency and gain insight into students' mathematical thinking. This book and its companion CD include sixteen mathematics tasks that are appropriate for grades 4 through 8 and can be used for instruction and assessment purposes. CONDITION â USED: Books sold are in GOOD or better condition. Good Condition: Minimal damage to the cover, dust jacket may not be included, minimal wear to binding, most of the pages undamaged(e.g., minimal creases or tears), highlighting / underlining acceptable on books as long as the text is readable and markings are not excessive, no missing pages. May be a former library book, with usual treatments(e.g., mylar covers, call stickers, stamps, card pockets, barcodes, or remainder marks). Extra components, such as CDs, DVDs, figurines, or access codes are not included. ISBN: 9780873535229 ISBN10: 0873535227 Contributors: Silver, Edward A., Parke, Carol S., Magone, Maria E., Lane, Suzanne,