1. The Impact of Instruction Through Models on Preservice Teachers' Understanding of Fraction Multiplication and Division Open Access Author: Ervin, Heather Kay Title: The Impact of Instruction Through Models on Preservice Teachers' Understanding of Fraction Multiplication and Division Graduate Program: Curriculum and Instruction Keywords: preservice teachers' understandingfraction modelsfraction multiplicationfraction divisionteaching intervention File: Download Ervin_Dissertation.pdf Committee Members: Andrea Vujan Mccloskey, Dissertation Advisor/Co-AdvisorEdith Frances Arbaugh, Committee MemberGwendolyn Monica Lloyd, Committee MemberPaul J Riccomini, Committee Member