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Debra Mahan is a veteran mathematics teacher with over 35 years of teaching experience. She spent the majority of her teaching career educating students in Fairhaven, MA and has come out of retirement in 2022 to share her knowledge of mathematics with GLCPS high school students. She has always loved helping students learn mathematics. 

Ms. Mahan has also served as Class Advisor and on the National Council of Teachrs of Mathematics. She loves traveling to other countries to learn about their customs, cultures and treasures.