About Us

Our goal is to help students better understand geometry through the use of digital, animated materials and contrasting cases. The project aims to help students think critically about mathematics and understand common misconceptions in geometry.

Erin Krupa, Ph.D. – Principal Investigator

A former high school math teacher, Krupa pursued a Ph.D. to impact education by working with future and practicing teachers on improving mathematics instruction. Her research focuses on improving the quality of mathematics teaching and learning through innovative curricular materials and professional development.

Jon Star, Ph.D. – Co-Principal Investigator

A professor at the Harvard Graduate School of Education, Star studies the learning of mathematics in middle and high school, with a particular focus on algebra. His research focuses on the development of flexibility in mathematical problem solving and instructional and curricular interventions that promote the development of mathematical understanding.

Brianna Bentley – Graduate Research Assistant

Bentley began her research career at Appalachian State University during her master’s program, where she studied college students’ understanding of fractions. She is currently pursuing her Ph.D. in Math Education at NC State, where her research focuses on developmental mathematics programs at community colleges.

Josh Mannix – Graduate Research Assistant

Mannix is pursuing his Ph.D. in Math Education at NC State. His research interests include math anxiety, specifically as it affects teachers at the secondary levels. Other areas of interest include non-Euclidean geometries and proof at the secondary level.

Funding

This project is supported by the National Science Foundation under Grant No. DRL 1907745 awarded to North Carolina State University. Any opinions, findings, and conclusions or recommendations expressed herein are those of the principal investigators and do not necessarily reflect the views of the National Science Foundation.

Project Citation:

Krupa, E. E., Bentley, B., Mannix, J. P., & Star, J. R. (2019). Animated Contrasting Cases in Geometry: 8th Grade Supplemental Materials. North Carolina State University. 

Website Citation:

Krupa, E. E., Mannix, J. P., Bentley, B., & Star, J. R. (2019). Animated Contrasting Cases in Geometry. https://sites.ced.ncsu.edu/acing/

Citations for the Individual Units:

Angles Materials: Krupa, E. E., Bentley, B., Mannix, J. P., & Star, J. R. (2019). Animated Contrasting Cases in Geometry: 8th Grade Supplemental Materials for Angles. North Carolina State University. 

Transformations Materials: Krupa, E. E., Bentley, B., Mannix, J. P., & Star, J. R. (2019). Animated Contrasting Cases in Geometry: 8th Grade Supplemental Materials for Transformations. North Carolina State University. 

Volume Materials: Krupa, E. E., Mannix, J. P., Bentley, B., & Star, J. R. (2019). Animated Contrasting Cases in Geometry: 8th Grade Supplemental Materials for Volume. North Carolina State University. 

Pythagorean Theorem Materials: Krupa, E. E., Mannix, J. P., Bentley, B., & Star, J. R. (2019). Animated Contrasting Cases in Geometry: 8th Grade Supplemental Materials for Pythagorean Theorem. North Carolina State University.