Stepan Paul Paul, S., Grundmeier, D., & Moore-Russo, D. (2024). 3D Manipulatives in Integral Calculus: Student Achievement and Confidence in Solids-Of-Revolution Tasks. Investigations in Mathematics Learning, 2, 1–20. https://doi.org/10.1080/19477503.2024.2312097 Moore-Russo, D., Martínez-Planell, R., Stanhope, S., Seeburger, P., Paul, S., & VanDieren, M. M. (2024). Multivariable Calculus Instructors’ Reports of Resource use. International Journal of Research in Undergraduate Mathematics Education. https://doi.org/10.1007/s40753-024-00243-5 Martinez-Planell, R., Moore-Russo, D., Seeburger, P., Stanhope, S., & Paul, S. (2024). Resource Use and Student Engagement in Multivariable Calculus. SIGMAA on RUME Annual Conference. Retrieved from http://sigmaa.maa.org/rume/Site/Proceedings.html Chen, J., Delp, K., & Paul, S. (2023). Manipulative calculus: active learning with 3D models. Proceedings of Symposia in Applied Mathematics, pp. 141–168. https://doi.org/10.1090/psapm/079/00714 Paul, S. (2023). What Can We Learn from Non-Euclidean Paper? In J. Holdener, E. Torrence, C. Fong, & K. Seaton (Eds.), Bridges 2023 (pp. 219–226). Retrieved from http://archive.bridgesmathart.org/2023/bridges2023-219.html Paul, S. (2021). The Flat Klein Bottle Rendered in Curved-Crease Origami. In D. Swart, F. Farris, & E. Torrence (Eds.), Bridges 2021 (pp. 47–54). Retrieved from http://archive.bridgesmathart.org/2021/bridges2021-47.html Paul, S., & Abrams, A. (2020). Hyperbolic paper. In D. Davis (Ed.), Illustrating Mathematics (pp. 24–25). Providence, Rhode Island.: American Mathematical Society. Paul, S. (2018). 3D Printed Manipulatives in a Multivariable Calculus Classroom. PRIMUS, 28(9), 821–834. https://doi.org/10.1080/10511970.2018.1445675 Paul, S., & Chen, J. (2018). Manipulative Calculus. Retrieved from https://www.manipulativecalculus.com/ Paul, S., & Gu, C. (2017). Tensor-splitting properties of $n$-inverse pairs of operators. Studia Mathematica. https://doi.org/10.4064/sm8518-2-2017 Paul, S. (2013). New methods for determining speciality of linear systems based at fat points in Pn. Journal of Pure and Applied Algebra. https://doi.org/10.1016/j.jpaa.2012.09.019 Moore-Russo, D., Martínez-Planell, R., Stanhope, S., Seeburger, P., Paul, S., & VanDieren, M. Multivariable calculus instructors' reports of resource use. International Journal of Research in Undergraduate Mathematics Education.