Melissa Hosten taught elementary, middle, and high school mathematics both in Tucson and Chandler. She has worked in education for more than 20 years, serving as Mathematics Department Chair, District Mathematics Specialist, and Grant Director. She supported the revision of the state standards in 2008 as a Mathematics Specialist for the Arizona Department of Education, and as a committee member for the revision of the standards in 2016. Melissa has supported teacher professional learning through her work at the Maricopa County Education Service Agency. She is a current or former governing board member of Arizona Math Leaders, Arizona Association of Teachers of Mathematics, Women and Mathematics Education, and Joint Committee for Women in Mathematical Sciences.