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Stewart, John; Miller, Mayo; Audo, Christine; Stewart, Gay – Physical Review Special Topics - Physics Education Research, 2012
This study examined the evolution of student responses to seven contextually different versions of two Force Concept Inventory questions in an introductory physics course at the University of Arkansas. The consistency in answering the closely related questions evolved little over the seven-question exam. A model for the state of student knowledge…
Descriptors: Physics, College Science, Scientific Concepts, Science Tests
Stewart, John; Stewart, Gay; Taylor, Jennifer – Physical Review Special Topics - Physics Education Research, 2012
Student use of out-of-class time was measured for four years in the introductory second-semester calculus-based physics course at the University of Arkansas. Two versions of the course were presented during the time of the measurement. In both versions, the total out-of-class time a student invested in the course explained less than 1% of the…
Descriptors: Physics, Calculus, Introductory Courses, College Science
Stewart, John; Ballard, Shawn – Physical Review Special Topics - Physics Education Research, 2010
This study examined the written work of students in the introductory calculus-based electricity and magnetism course at the University of Arkansas. The students' solutions to hourly exams were divided into a small set of countable features organized into three major categories, mathematics, language, and graphics. Each category was further divided…
Descriptors: Physics, Introductory Courses, Content Area Writing, Undergraduate Students
Stewart, John; Griffin, Heather; Stewart, Gay – Physical Review Special Topics - Physics Education Research, 2007
The force concept inventory and a 10-question context-modified test were given to 647 students enrolled in introductory physics classes at the University of Arkansas. Context changes had an effect ranging from -3% to 10% on the individual questions. The average student score on the ten transformed questions was 3% higher than the average student…
Descriptors: Mechanics (Physics), College Science, College Students, Science Instruction