Implicit and Unchecked Assumptions Interfere With Problem-Solving in Physics

• In Event: Science Teaching and Learning: Physics Education

Abstract

Recent work has characterized problem-solving in terms of the decisions made by an expert scientist as they solve authentic problems. One crucial decision involves the assumptions that are made while solving an authentic problem. Though making assumptions is required for simplifying authentic problems, students are provided with little opportunity to practice making and checking assumptions. Results from two studies demonstrate students' shortcomings in making assumptions and/or reflecting upon accuracy of their assumptions. Indeed, incorrect assumptions can interfere with problem-solvers' ability to solve different types of physics problems despite the use of other effective practices. The results suggest that, for effective problem-solving, we should give students more training in making simplifying assumptions and reflecting upon them as they are solving problems.

Authors

• Shima Salehi, Stanford University

• Eric Burkholder, Stanford University