Celia Baron, M.Sc.(mathematics), M.Sc.(mathematics education), dedicates herself to promoting the learning, enjoyment, and appreciation of mathematics. Celia currently tutors students in mathematics following many years as a mathematics teacher in all grade levels. Celia has written mathematics curriculum, created over 200 mathematics puzzles, and is the author of the Thinking Strategies resources. She conducts training sessions and workshops for educators across North America.