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082 _aDPer 510.071 J826 November 2017 v. 48 n. 5, Jan-May 2019 v. 50 n. 1-3.
100 _aLockwood, Elise.
_eauthor.
_964547
245 _aTwo undergraduate students' reinvention of the multiplication principle /
_cElise Lockwood and Branwen Purdy.
260 _aReston, Virginia ;
_bNational Council of Teachers of Mathematics ,
_cMay 2019.
300 _aVolume 50, pages 225-267 :
_billustration ;
_c24 cm.
500 _aJournal for Research in Mathematics Education, vol. 50, no. 3, pages 225-267, May 2019.
650 0 _a Computation
_970449
650 0 _aConcept formation.
_966419
650 0 _aMathematical Concepts
_970450
700 _aLockwood, Elise.
_eauthor.
_965698
700 _aPurdy, Branwen.
_eauthor.
_965699
942 _2ddc
_cPER
999 _c23574
_d23574