Students move from slides, flips, and turns into reasoning about the characteristics of rigid transformations.
Peter Wiles, email@example.com, is a professor and mathematics education graduate coordinator at Eastern Illinois University in Charleston. He is interested in instructional approaches that support the development of students' geometric reasoning. Travis Lemon, firstname.lastname@example.org, teaches mathematics at American Fork Junior High School in American Fork, Utah. He is also involved in professional development and curriculum development. Alessandra King, Alessandra.King@holton-arms.edu, is a math teacher at Holton-Arms School in Bethesda, Maryland. Her interests include secondary education, educational consulting, lesson planning, educational technology, and instructional design.