Technology is integral to modern education, supporting exploration, computation, assessment, communication, and motivation. National curriculum and teacher preparation standards, such as the Common Core State Standards for Mathematics (NGA & CCSSO, 2010) and Standards for Preparing Teachers of Mathematics (AMTE, 2017), emphasize the strategic use of technology in teaching mathematics across grade levels. At the college level, the Committee on […]

Introduction  Proof-writing is a core disciplinary practice of mathematicians and a crucial skill of all mathematics majors and future mathematics teachers. Developing students’ facility and comfort with proofs is an important objective of undergraduate Geometry for Teachers (GeT) courses (An et al., in press; Grover & Connor, 2000). GeT courses cultivate robust and flexible knowledge […]