Chuck Larrieu Casias, California, is driven by curiosity and learning. He received his B.Sc. in Mathematics Research from University of Nebraska Lincoln. There, he used math to answer questions like, “What is the Cayley Graph of the Braid Group on Four Strands?” and “What is the stable daily growth rate of this aphid population?” He received his teaching credential and Master of Arts in Teaching from University of Southern California before teaching in LAUSD for 3 years as a Math for America Teaching Fellow. He is now a curriculum writer for Illustrative Mathematics’ middle school and high school curricula. In his personal time, he likes to learn computer programming, build computers, play video and board games, and listen to podcasts.