How well elementary teachers identify parallelogram?

Abstract

This report summarises a study examining preservice elementary teachers' geometry content knowledge with a focus on parallelogram. It was a descriptive study examining 45 preservice teachers' reasoning in the process of determining which quadrilateral can be classified as a parallelogram. Findings have revealed that these elementary teachers do not possess sound understanding of parallelogram and class inclusion between parallelogram and trapezoid at the expected level. © 2012 Copyright Taylor and Francis Group, LLC.