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*020  $a9781680540161$qh.
*040  $bnob$ekatreg
*082  $a510.7
*096  $a510.7 S
*1001 $aSmith, Margaret Schwan
*24510$a5 practices for orchestrating productive mathematics discussions$cMargaret S. Smith, Mary Kay Stein
*250  $a2nd rev. ed.
*260  $aReston$bNational Council of Teachers of Mathematics$c2018
*653  $amatematikkundervisning$amatematikk$ametoder$aundervisning$adidaktikk$akommunikasjon
*7001 $aStein, Mary Kay
*850  $aHeggen VGS
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