*57%*:**Development and validation of a sequence of clicker questions for helping students learn addition of angular momentum in quantum mechanics***51%*:**Development and Evaluation of a Quantum Interactive Learning Tutorial on Larmor Precession Of Spin***40%*:**Designing, validating, and contrasting conceptual quantum mechanics questions for spin states and spatial wave functions***38%*:**Quantum mechanics concept assessment: Development and validation study***32%*:**The impact of peer interaction on the responses to clicker questions in an upper-level quantum mechanics course***31%*:**Improving Students' Understanding of Quantum Mechanics***29%*:**Investigating Student Difficulties with Time dependence of Expectation Values in Quantum Mechanics***28%*:**Design and validation of the Quantum Mechanics Conceptual Survey***28%*:**Spin First instructional approach to teaching quantum mechanics in sophomore level modern physics courses***28%*:**Energy measurement resources in spins-first and position-first quantum mechanics***28%*:**Validation and administration of a conceptual survey on the formalism and postulates of quantum mechanics***27%*:**Interactive Learning Tutorials on Quantum Mechanics***27%*:**Using student-generated content to engage students in upper-division quantum mechanics***27%*:**Spin First vs. Position First instructional approaches to teaching introductory quantum mechanics***26%*:**Testing the development of student conceptual and visualization understanding in quantum mechanics through the undergraduate career***26%*:**Quantum Mechanics Survey (QMS)***26%*:**Surveying students' understanding of quantum mechanics in one spatial dimension***26%*:**Design and validation of a two-tier questionnaire on basic aspects in quantum mechanics***26%*:**Student perceptions of math-physics interactions throughout spins-first quantum mechanics**