Virginia Bastable is one of the authors of the Developing Mathematical Ideas professional development curriculum published by NCTM and two books on mathematical reasoning about the operations published by Heinemann: Connecting Arithmetic to Algebra, and But Why Does it Work: Mathematical Argument in the Elementary Classroom. She also contributed to the third edition of Investigations in Number, Data and Space. Current work includes facilitating online academic year courses and summer institutes for the MATM program and consulting with UCLA to support teachers and administrators in the Los Angeles Unified School District.