01095cam a2200241 4500 2031620 TxAuBib 20070302120000.0 150717s2002||||||||||||||||||||||||und|u 9780325003559 acid-free paper 0325003556 acid-free paper TxAuBib Fosnot, Catherine Twomey. Young mathematicians at work : constructing fractions, decimals, and percents / Catherine Twomey Fosnot, Maarten Dolk. Portsmouth, NH : Heinemann, 2002. p. cm. The third in a three volume set, Young Mathematicians at Work: Constructing Fractions, Decimals and Percents focuses on how children construct a deep understanding of number and the operations of fractions, decimals and percents. 20070302. Fractions Study and teaching (Elementary.) Decimal fractions Study and teaching (Elementary.) Percentage Study and teaching (Elementary.) Dolk, Maarten Ludovicus Antonius Marie.