*80%*:**Analyzing student understanding of vector field plots with respect to divergence***59%*:**Students' difficulties with unit vectors and scalar multiplication of a vector***59%*:**Student thinking about the divergence and curl in mathematics and physics contexts***58%*:**Improving Student Understanding of Vector Fields in Junior-Level E&M***57%*:**Improving student understanding of Dirac notation by using analogical reasoning in the context of a three-dimensional vector space***56%*:**Arrows as anchors: Conceptual blending and student use of electric field vector arrows***52%*:**Analysis Of Shifts In Students' Reasoning Regarding Electric Field And Potential Concepts***48%*:**Investigating Upper-Division Students' Interpretations of the Divergence Theorem***47%*:**MIT Physics 8.02: Vector Fields Visualizations - Cross Product of Two Vectors***47%*:**Students' Difficulties in Interpreting the Torque Vector in a Physical Situation***47%*:**Studentsâ€™ conversion from electric field line diagrams to other representations***46%*:**Student reasoning about electrostatic and gravitational potential energy: An exploratory study with interdisciplinary consequences***46%*:**The effect of similar surface features on studentsâ€™ understanding of the interaction of charges with electric and magnetic fields***44%*:**Student Objections to and Understanding of Non-Cartesian Unit Vector Notation in Upper-Level E&M***43%*:**A research-based approach to improving student understanding of the vector nature of kinematical concepts***43%*:**University students' conceptions of the electric and magnetic fields and their interrelationships***43%*:**Student Ideas around Vector Decomposition in the Upper Division***43%*:**Student Understanding of Superposition: Vectors and Wave Functions***43%*:**Student difficulties with finding the corrections to the energy spectrum of the hydrogen atom for the strong and weak field Zeeman effects using degenerate perturbation theory**