Madeleine Jetter graduated with a bachelor of arts in mathematics from Columbia University. She earned a PhD in Mathematics from UCLA in 2007 while participating in the NSF K-12 fellowship where she developed a love for K-12 education. She is now an Associate Professor of Mathematics at CSU San Bernardino, where she is actively involved in the mathematical preparation of preservice elementary and secondary teachers. She was the PI of Project DELTA (2010-2013), a CA Math Science Partnership and is Project Director of the US Department of Education i3 project TEEM (2015-2019). Madeleine enjoys helping students and teachers to know, do and teach mathematics at all levels.