@book{23360,
	author = {Rachlin Sid, Kathleen Cramer, Connie Finseth, Linda Cooper Foreman, Dorothy Geary, Seth Leavitt and Smith Margaret Schwan and Susan N. Friel, Peggy A. House},
	title = {Navigating through Number and Operations in Grades 6-8},
	publisher = {National Council of Teachers of Mathematics},
	year = {2005},
	address = {Reston}
}