Professional Experience: I hold a Ph.D. in Mathematics Education and MS in Mathematics from Illinois State University. My dissertation research concerned the teaching and learning of trigonometry in the modern sciences. The completed dissertation, Investigating the Purpose of Trigonometry in the Modern Sciences, can be downloaded here. I also hold a Bachelor of Music Education from the University of Wisconsin–Eau Claire (my focus was instrumental and general music teaching) with a second major in mathematics education. From 2011 to 2013, I worked as the assistant editor for the Journal for Research in Mathematics Education. Prior to my graduate studies, I taught high school mathematics in Neenah, Wisconsin.
Curriculum Vitae: Click here to view/download a copy of my curriculum vitae.
Research Interests: Use of technology in the teaching and learning of mathematics, rethinking grades in mathematics education, the teaching and learning of trigonometry, the history of the implemented mathematics curriculum, the development of probabilistic reasoning, and the professional development of teachers of mathematics. Additionally, I am interested in helping others pursue graduate degrees in mathematics education. The field is in need of more motivated individuals but the process can be intimidating to those on the outside. If you are thinking about pursuing a Master's, Ph. D., or Ed. D. in Mathematics Education, please feel free to send questions my way.
Facebook Group: If you are on Facebook, I moderate the Mathematics Education Researchers Facebook Group. Membership is open to anyone interested so feel free to apply.
Other Interests: board games, linux (Ubuntu mostly), musicals, open source technologies, indie games, puzzling, and science fiction. I also co-coordinate a yearly gaming convention in La Crosse called Coulee Con (http://www.couleecon.com).
Questions? Comments? Find an error? Send me an email herteljt [at] gmail [dot] com or a tweet http://www.twitter.com/herteljt