*44%*:**Contrasting studentsâ€™ understanding of electric field and electric force***44%*:**Algebra-Based Students and Vector Representations: Arrow vs. ijk***41%*:**Using conceptual blending to describe how students use mathematical integrals in physics***35%*:**Student conceptual resources for understanding mechanical wave propagation***35%*:**Algebra-Based Students & Vectors: Assessing Physical Understanding in Arrow vs ijk***34%*:**Analyzing student understanding of vector field plots with respect to divergence***33%*:**Student use of a material anchor for quantum wave functions***33%*:**The use of ACER to develop and analyze student responses to expectation value problems***33%*:**Analysis Of Shifts In Students' Reasoning Regarding Electric Field And Potential Concepts***33%*:**Student Understanding of Superposition: Vectors and Wave Functions***32%*:**Student difficulties with quantum states while translating state vectors in Dirac notation to wave functions in position and momentum representations***31%*:**Studentsâ€™ understanding of dot product as a projection in no-context, work and electric flux problems***31%*:**Students' difficulties with unit vectors and scalar multiplication of a vector***31%*:**A qualitative investigation of college students' conceptions of electric fields***30%*:**Electric Multipole Field Model***30%*:**Student Reasoning about the Divergence of a Vector Field***30%*:**Improving Student Understanding of Vector Fields in Junior-Level E&M***29%*:**University students' conceptions of the electric and magnetic fields and their interrelationships***29%*:**Studentsâ€™ Understanding of Density: A Cognitive Linguistics Perspective**