David Cole has degrees in math and computer science and has shared his passion for education at many levels, including teaching at the college level, coaching elementary math teams, and running a summer math camp. He also has a love of writing and has written a number of plays as well as The Math Kids series. Find him on his website or on Facebook, Twitter, and LinkedIn.

Shannon O'Toole has been illustrating children's books since 2018. Originally a figurative painter, Shannon has been exploring new ways to tell stories through her art. Her artistic practices are inspired by the many unique characters and people in her life. In addition to her work in children's books, Shannon is an elementary school teacher. When she is not painting, she can be found drinking coffee, watching classic movies and exploring new recipes in her kitchen. Shannon lives and works outside of Toronto, Ontario, Canada.