Susan N. Friel, grades 6-8 editor.

Navigating through geometry in grades 6-8 grades 6-8 editor David K. Pugalee ... et al. ; Susan N. Friel - ed. - [S.l.] National Council of Teachers of Mathematics 2002 - viii, 128 p. - Principles and standards for school mathematics navigations series . - Principles and standards for school mathematics navigations series .

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