Mission Statement
The Association of Teachers of Mathematics in Maine is a professional organization whose mission is to promote and support improved student learning of mathematics. ATOMIM provides and encourages participation in professional development for teachers that leads to equitable, effective, and quality mathematics instruction.

Board Members


Marielle Edgecomb

Marielle Edgecomb is a veteran educator of more than 23 years and has enjoyed numerous educational roles both in the classroom and beyond.  Marielle is passionate about proficiency-based education and student-centered classrooms.  Her current role as a middle level math teacher at the Peninsula School in Prospect Harbor allows her the opportunity to work with students and colleagues to reach for the ideal on behalf of every student.  Atomim has provided the perfect opportunity to bring colleagues together to celebrate our work in mathematics, helping students see that math makes sense and is accessible by all.  Marielle is the state finalist for the PAEMST award for Mathematics for 2015-2016.  


Past- President

Darlene Ulrickson

Darlene Ulrickson is the math specialist at Warsaw Middle School in Pittsfield Maine. She has a degree in Economics and a Master’s degree in Business Administration from the University of Maine. After a career in banking and insurance, she was a stay at home mom to her two boys Andy and Tommy. She was hired as a math teacher at SeDoMoCha Middle School in Dover-Foxcroft under a targeted-needs certificate. There she completed the coursework necessary to become a highly qualified mathematics educator. After 5 years at SeDo, she took a similar position at Warsaw Middle School.  She was the District 2 rep for ATOMIM and chaired the annual conference program committee before becoming President.  She is looking forward to being Past President this year.

Communications Director     

Holly Trottier 

Holly Trottier has been teaching grades 3, 4, and 5 for 18 years. She began teaching in Florida, and currently teaches grade 4 at the CK Burns School in Saco. She has also taught in Kennebunk, Waterville and Florida. Holly has a Masters in Curriculum, Instruction and Assessment, and is Nationally Board Certified as a Middle Childhood Generalist, which is where her passion for Math, Science and STEM education began. Working with colleagues, she has designed and implemented STEM lessons, whole school events, and evening activities for families. Holly loves coaching Lego Robotics, and supporting colleagues through professional development, as seen in her role on the Instruction and Professional Development committee with the Maine Education Association. The most important thing to Holly is inspiring students to be people who make a difference in the lives of others, and the world around them.


Laura Reynolds 

Laura Reynolds is a math teacher/coach at Lawrence Junior High School in Fairfield, Maine. She is currently working with students and teachers in grades 7 and 8. Her experiences in the class room have spanned 25 years in grades 7 through 12. Laura earned her BS in Mathematics Education from  Plymouth State University and her Master's in Educational Leadership from the University of Maine.  Laura has participated in curriculum and assessment work on a local level in addition to providing professional development sessions for staff.  She was a fellow in the third cohort of The Governor's Academy for Science and Mathematics Educational Leadership, returning as a mentor for the fourth cohort.  Laura believes that improvement for our student's learning in mathematics is a direct result of the support we provide to the teachers of mathematics. 

Membership Chair

Pamela Rawson

Pamela Rawson has been a high school math teacher in southern Maine for more than 25 years, teaching the last few years at Baxter Academy for Technology and Science. She has also taught in Wells, Cape Elizabeth, Portland, and at Poland Regional High School. She took a two year break from teaching to work for the Maine Mathematics and Science Alliance (MMSA) as a math facilitator in the SAD75/Brunswick Beacon Center. Pam’s other educational passion is professional development. Beginning in 1993, Pam worked as a co-director for the Summer Mathematics & Science Teacher Academies in southern Maine. While she was mathematics facilitator for MMSA, she co-wrote a grant to introduce Connected Mathematics to middle school teachers. Most recently, she has become a Texas Instruments T-cubed Regional Instructor.

ATMNE Representative

Shawn Towle

Shawn Towle, ATMNE Representative, has been a middle school mathematics teacher in Maine for the past 25+ years.  He is currently teaching eighth grade math at Falmouth Middle School and coaches his school's MathCounts and Southern Maine Math League teams.  He is a founding member of the Casco Bay Math Teachers' Circle, a Past President of the Association of Teachers of Mathematics in Maine (ATOMIM) and is an adjunct instructor at the University of Southern Maine in mathematics education. Most recently, he served as Chair of the Affiliate Relations Committee for NCTM and represented Eastern Region 1. He is excited to continue his regional work as the Eastern 1 Regional Director for NCSM and is honored to represent ATOMIM on the Association of Teachers of Mathematics in New England board.

NCTM Representative

Jenny Jorgensen

Jenny Jorgensen, NCTM Representative, is working as a Mathematics Field Coach for the University of Farmington.  She is very excited about the work she is doing with teachers who are part of a math coaching program through UMF.  Previously she was at Michigan State University in a PhD Mathematics Education program where she jumped at the opportunity to teach math methods classes and a graduate geometry class to first year teachers.  She is teaching the Math Methods class for the ETEP program at the University of Southern Maine and teaching an undergraduate math class for the Southern Maine Community College. She has her administrative degree and has been an administrator at a middle school but much prefers her current work with helping teachers grow professionally and helping students experience “aha” moments.  Prior to her administration experience she was a middle school math teacher, taught elementary school and taught a year at a private high school.  She has been teaching since 1984.  She is the 2012 Awardee of the Jacqueline Mitchell Award and the 1991 Presidential Awardee for the State of Maine.  She regularly presents at state and national level on topics such as: differentiation, grouping strategies, and implementation strategies for Connected Mathematics.

NCSM Representative

Allie Malmstrom is a 5th grade teacher at Etna-Dixmont School in RSU 19. She has worked with several grades at the elementary level and loves watching students discover new concepts in mathematics. Allie is studying as a mathematics coach in University of Maine at Farmington's Maine Mathematics Coaching Program. She is also a practicing Mathematics Community Teacher Leader who works with ATOMIM and the DOE to make professional development in the field of mathematics accessible for all teachers.

Region I Representative: Aroostook

Jennifer Mahan

Jennifer Mahan is a mathematics educator in the small Northern Maine town of Mars Hill.  Jennifer has taught grades 2, 5, and 6 for the past eleven years at Fort Street Elementary School in Aroostook County.  She will begin a new chapter in her teaching career this year (2017-2018) moving into a high school math position teaching algebra and geometry. Jennifer often spends her days explaining to students the beauty of mathematics and how every career they choose will somehow use the subject math. Jennifer views the world of education as constantly evolving, so she has remained active in the educational setting as a student herself. In 2016, Jennifer completed the math leadership series through the University of Maine at Farmington and in May of 2018 Jennifer will graduate with her masters degree in educational leadership.  Along with her duties of teaching and learning, Jennifer likes to be an active member of her school community. Jennifer is a formative assessment teacher leader for her school, the certification committee chair, the Central Aroostook Teachers Union treasurer, and a member of the SAD #42 leadership team.

Region II Representative: Penquis (Penobscot, Piscataquis)

Amanda Grove

Amanda Grove has been a seventh grade math and social studies teacher at Samuel L. Wagner Middle School in Winterport, Maine, since 2013.  She earned her Bachelor's degree in elementary education with a concentration in mathematics from the University of Maine at Farmington in 2007.  More recently, in 2014, she earned her Certificate in Math Leadership from the University of Maine at Farmington.  Amanda began her teaching career at Searsport District Middle School in sixth grade, where in 2012, alongside her sixth grade teaching team, she was recognized as a finalist for the ACTEM Educator of the Year.

Region III Representative: Downeast (Hancock, Washington)

Andy Stephenson 

Andy Stephenson began his teaching career over thirty years ago as a “triple threat” (teacher, coach and dorm parent) at Cushing Academy in Ashburnham, Massachusetts.  In the late 80’s, he and his new wife moved downeast where they have remained ever since.  Andy ran a small tutoring service called Access Tutorials until landing  a job teaching Middle School Math, Science and Social Studies.  He taught Math at Sumner Memorial High School until the spring of 2016 when he moved to George Stevens Academy.  Andy holds a Masters in Instructional Technologies from the University of Maine with a concentration in differentiation.  Most recently, he has been a school leader in proficiency based education.

Region IV Representative: Midcoast (Knox, Lincoln, Sagadahoc, Waldo)

Peggy Brown

Peggy Brown is the Math Teacher Leader at Mt. Ararat Middle School in RSU 75 (Topsham, Harpswell, Bowdoinham and Bowdoin).  She has been teaching and coaching math at the middle level since 1995.  Starting out with a Masters in Literacy and English as a Second Language, she taught English as a Second Language before moving over to the math side of things.  She has National Board Certification in Mathematics (Early Adolescence). Peggy is a member of her school Instructional Leadership Team, designs and delivers professional development opportunities for the math teachers in her district and is participating in the Developing and Supporting Assessment Practices (DSAP) course through EDC. She is a member of RSU 75’s Proficiency Based Learning Steering Committee and the PEPG Steering Committee as well as serving as chief negotiator for her local MEA bargaining unit.  She lives in Brunswick.

Region V Representative: Kennebec

Lindsey Bickford

Lindsey Bickford is a mathematics educator in Waldo County. She is currently teaching grade 8 students at Mount View Middle School, a part of RSU 3. Lindsey loves to bring engaging, hands-on activities into the classroom to help support students in their learning.  She is not afraid to take risks and make mistakes and has done this several times on the road to creating a proficiency-based, student-centered classroom. Lindsey truly believes in being a life-long learning and modeling this for her students. Lindsey completed the math leadership series through the University of Maine at Farmington and has earned her master’s degree in Educational Leadership also through UMF. Most recently, Lindsey is a participant in the Maine Mathematics Coaching Project. Within her school community, Lindsey is a teacher leader, the middle school math team coach, served on the district strategic planning committee as well as the K-12 math committee and has lead several in-service day sessions on a variety of topics. 

Region VI Representative: Western (Franklin, Oxford, Somerset, Androscoggin)

Sarah Irish 

Sarah Irish is a middle school math teacher at T.W. Kelly Dirigo Middle School in RSU 56.  During her time there she has taught math, science, and gifted and talented.  She has also been very involved with the integration of technology into the classroom as well as the shift to proficiency-based education.  Sarah has facilitated and spoken at many workshops and conferences on the integration of technology into the classroom, as well as the shift to a proficiency-based classroom.  She received her undergraduate in environmental science from Simmons College, a masters degree in middle-level mathematics from Walden University, and a Ph.D. in educational technology also from Walden University.

Region VII Representatives: Cumberland

Angela Marzilli   

Angela Marzilli is currently the PreK-12 STEM and Project Based Learning Coordinator in the South Portland School Department, providing professional development and coaching to math and science teachers. While her work in this position is primarily with teachers, she gets some time with students while teaching one high school geometry and one forensic science course this year. Angela's past positions include third, fourth, and fifth grade classroom teacher as well as the math teacher for K-8 gifted students. She is particularly excited to be teaching high school geometry this year, as she can trace her love of math directly back to her own high school geometry teacher in Gray-New Gloucester. When Angela isn't working in South Portland, she may be working with schools around the country in her position on the National Faculty of the Buck Institute for Education, doing other math or science consulting with local schools, or spending time with her family in their home in Cape Elizabeth. 

Region VIII Representative: York

Hattie Pellegrino

Hattie Pellegrino is a mathematics educator at Massabesic High School in Waterboro, Maine since 2009. She earned both a Bachelor of Arts Degree in Mathematics and a Master of Science in Education from the University of Southern Maine.



Jacqueline Mitchell


Jackie's career spanned many decades.  After starting out as a teacher in the Portland School System for grades 2 and kindergarten, Jackie was hired to be the Math Consultant for grades K-8.  She later served as this system's Math Director for grades K-12. The State of Maine was fortunate to have Jackie as our Mathematics Consultant for the Maine Department of Education. 

            Jackie was involved in organizing PRISM (Problem Solving in Science and Math) Conferences for elementary, middle, and high school teachers. Jackie ran the Title 11 Eisenhower Program for 11 years in the 80's and 90's, continuing her impact on both teachers and students. She also co-led an after school program for the State and was a Principal Investigator for the NSF Systemic Initiative for the State of Maine, working with mathematics educators, business people, and state leaders.

            The roles Jackie has held in the Association of Teachers of Mathematics in New England (ATMNE) include President-elect, President, and Past President. Jackie has also been the ATOMIM representative and served on a number of committees in the organization.

            In ATOMIM Jackie has served as President for two different terms, secretary, and treasurer.  She has also been the NCTM rep, the ATMNE rep, chaired numerous state conferences, and been the ATMNE conference chair twice. Jackie currently serves the affiliate as the historian.

            Jackie has been a speaker numerous times at NCTM national and regional conferences. For NCTM, Jackie was on the Elections and Nominations Committee, served as their chair, and served on the Regional Services Committee (now Affiliate Services). She has been on the board for the International Math Olympiad and served as secretary.  Jackie has worked on the event in both Washington, D.C. and in Scotland. She has been president, secretary, and conference chair for the Association of Teachers of Mathematics and has been on several committees and the board of the National Council of Supervisors of Mathematics.  Jackie has spoken in Canada and American Samoa.

            In 1999, the Association of Teachers of Mathematics in Maine created the Jacqueline Mitchell Mathematics Educator Award to honor Jackie, and the award continues to be given each year.  Jackie has also been presented with the Phoenix Award, presented by the Chamber of Commerce and Economic Development for Southern Maine.  

Administrative Liaison

Jane Stork


Jane Stork is the Principal at the Etna-Dixmont School in Etna, Maine. She earned her Bachelor’s in Music Education, a Master’s in Education and a Certificate of Advanced Studies in Administration.   Before taking on her role as Principal, Jane was Head of Mathematics and Science for the RSU #19 District.  She began her teaching career as a music educator but taught grade one, five, six as well as seventh and eighth grade mathematics.  In addition to her role as Principal, Jane is on the Board of Directors of the Maine Principal’s Association (MPA) and is the Maine State Representative on the National Association of Elementary School Principals (NAESP).

Higher Education  

Sandra Macarthur

Sandra MacArthur is the Director of Educational Outreach at UMF. She currently oversees the Certificate in Math Leadership Program and the Maine Mathematics Coaching Project.  Sandra previously served as the Executive Director of Maine Schools Superintendents Association, the Superintendent of Schools for MSAD 59, Superintendent of Union 113 and as Director of Special Education for Union 113 before accepting her current position in July 2013. She has taught educational leadership courses for University of Maine at Farmington and Orono since 2001. 

Government Relations / Maine DOE

Michele Mailhot

Michele joined the Maine Department of Education in July 2009 as the mathematics specialist and Penquis regional representative. In her role at the Maine DOE, she works with a wide audience of stakeholders in education across the state. Michele also coordinates the Presidential Award for Excellence in Mathematics Teaching.

Before accepting the position of mathematics specialist, Michele was a grade 7/8 math teacher for nine years and a high school math teacher for two years. In addition to her work in the classroom and at the State level, she also has worked as an independent contractor with NASA developing curriculum for teachers across the nation that is aligned with the CCSSM with a focus on the integration of mathematics, science and literacy.

Michele holds a Maine Professional Teacher Licensure in Secondary Education, 7-12 Mathematics. She is a fellow of the Academy of Mathematics Leadership. Michele earned her Masters in Education with a concentration in mathematics for grades six through eight from Walden University, her Masters in Education from the University of Maine and her Bachelor of Science in secondary education with a concentration in mathematics from the University of Maine at Farmington.

Cheryl Tobey

Cheryl Rose Tobey is a Mathematics Specialist at the Maine Department of Education. She is passionate about providing professional development opportunities for teachers and has co-wrote several formative assessment resources published by Corwin Press. Previously, Tobey was the Senior Program Director for Mathematics at nonprofits Education Development Center (EDC) and Maine Mathematics and Science Alliance (MMSA) where she directed multiple mathematics professional development initiatives involving Maine teachers. Before joining MMSA and EDC, Tobey was a high school and middle school mathematics educator for 10 years. 

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