Mathematics Teacher (1992) Vol. 85, No. 6
lm8l SEPTEMBER 1 992 ~ Volume 85 Number 6 NATIONAL COUNCIL OF TEACHERS OF MATHEMATICS C'U~II'l.! I R C'OOPI::R \TI\ l:: LtAR ' li'IG Putting Ideas to Work PRENTICE HALL Call toll-free 1-800-848-9500 About the cover The tower of fraction bars informally conveys the notion of limit. See "Reader Refl ections" for further
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