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Abstract Title: Identifying Student Difficulties with Density and Buoyancy
Abstract: This study is part of an effort to develop an FCI-style diagnostic test assessing student understanding of fluids. In particular, this poster addresses questions which involve density and buoyancy, one of which is modified from McDermott's Tutorials. The McDermott "floating blocks" question, which asks students to predict the final location of blocks released from rest when submerged and explain their reasoning, has been administered to hundreds of students in three different introductory courses at Grove City College for the past six years.  We used the common student responses to craft a multiple-select version of the "floating blocks" problem and added a question about the definition of density in 2008.  In addition to discussing the development of the multiple-choice questions, this poster will show the effects that changing workshop activities have had on student performance on the "floating block" question.
Abstract Type: Contributed Poster

Author/Organizer Information

Primary Contact: DJ Wagner
Grove City College
100 Campus Drive
Grove City, PA 16127
Phone: 724 458 3789
Co-Author(s)
and Co-Presenter(s)
Sam Cohen
Grove City College
cohensj1 -at- gcc.edu

Adam Moyer
Grove City College
moyeraj1 -at- gcc.edu