Mathematics Teaching in the Middle School (1994-1996) Vol. 1, No. 9
lmtltthlt•for Fjp/orrr Plus T/-.JO.\'a Sl'/wn/Edt/ton ami .1/oth E.rpltm~ V J.I).IJ5 Tl l nmd ltllll't'' (a/1 Cll/11 D D L E S (' H 0 0 L At Texas Instruments, we not only listen to your ideas, we produce them. You told us you want to help middle school students visualize mathematical concepts, manipulate and simplify
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