*72%*:**Assessing and improving student understanding of quantum mechanics***70%*:**Exploring Student Understanding of Energy through the Quantum Mechanics Conceptual Survey***67%*:**The Influence of Student Understanding of Classical Physics When Learning Quantum Mechanics***66%*:**Improving student understanding of addition of angular momentum in quantum mechanics***65%*:**Improving students’ understanding of quantum measurement. I. Investigation of difficulties***64%*:**Student Difficulties with Quantum Mechanics Formalism***62%*:**Student difficulties in learning quantum mechanics***62%*:**Investigating student understanding of basic quantum mechanics in the context of time-dependent perturbation theory***61%*:**Student difficulties with determining expectation values in quantum mechanics***59%*:**Surveying Students’ Understanding of Quantum Mechanics***59%*:**Surveying students' understanding of quantum mechanics in one spatial dimension***59%*:**Improving students' understanding of quantum mechanics via the Stern–Gerlach experiment***58%*:**Testing the development of student conceptual and visualization understanding in quantum mechanics through the undergraduate career***58%*:**Improving Students' Understanding of Quantum Mechanics***57%*:**Improving Students' Understanding of Quantum Mechanics***56%*:**Student Difficulties with Energy in Quantum Mechanics***56%*:**Student understanding of quantum mechanics***56%*:**Dynamics of Student Modeling: A Theory, Algorithms, and Application to Quantum Mechanics***56%*:**Investigating Student Difficulties with Time dependence of Expectation Values in Quantum Mechanics**