Mathematics Department Mission Statement

The Mathematics Department at Brophy College Preparatory is committed to the belief that all creation is a reflection of God’s love and presence which demands a passionate and generous response from the entire community. By creating an atmosphere for academic, emotional and spiritual growth, the Math Department develops critically thinking, articulate, sensitive and aware students with a strong sense of self-worth and a desire to do justice in their community.

The mathematics curriculum of Brophy is designed to support the growth of an Ignatian student. After four years, each student should exhibit the expected learning outcomes for a student attending a Jesuit high school. These include being open to growth, intellectually competent, religious, loving and committed to doing justice. Each of these outcomes is addressed within the mathematics curriculum at Brophy, with a particular emphasis on openness to growth and intellectual competence.

Ian Aston, Department Chair

Algebra 1, Honors Algebra 2, AP Calculus
Mr. Aston teaches math and is the department chair. He has taught every math course in the curriculum and all high school grade levels over his 13-year career. When he is not on campus he can be found at home with his wife and five children. When he is not in the state he can be found in northwest Montana exploring Glacier National Park.
Classroom: Piper 222  ||  Tel: 602-264-5291, ext. 6284  ||

Philip Birgenheir

Algebra 2, Honors Calculus
Mr. Birgenheir graduated from The Catholic University of America in 2010 with a degree in biochemistry. He moved to Phoenix in 2010 to work with Teach For America. During his two-year TFA commitment, he completed a Master of Secondary Education at ASU. From 2012-14, he carried out a Fulbright teaching grant in Vienna, Austria where he taught English as a second language. At Brophy, in addition to teaching mathematics, he helps coach the Speech and Debate team.
Classroom: Piper 119  ||  Tel: 602-264-5291, ext. 6284  ||

Monica Castañeda

Honors Algebra 1, Honors Algebra/Geometry
Ms. Castañeda joined the Brophy faculty in 2005. She has a Bachelor of Education from the University of Lethbridge in Alberta, a Master of Education from ASU, and a Master of Arts from NAU. Ms. Castañeda moderates the Math Club, co-moderates Key Club and assists with the Ad Majorem Community Program.
Classroom: Piper 120  ||  Tel: 602-264-5291, ext. 6284  ||

Doug Cox

Computer Coding, Honors Algebra 2, Honors Calculus
Mr. Cox earned a Bachelor of Science in computer information systems from ASU in 2000 and a Master of Secondary Education from NAU in 2003. Mr. Cox joined the Brophy faculty in 2004 and has taught various courses in the mathematics department. He also teaches Brophy’s Introduction to Coding elective. Additionally, Mr. Cox is the head freshman basketball coach and an assistant track coach.
Classroom: Piper 220  ||  Tel: 602-264-5291, ext. 6284  ||

Michael Day

Algebra 1, Pre-Calculus
Mr. Day joins the Brophy faculty after teaching and coaching at Rockhurst High School, a Jesuit high school in Kansas City, since 2008. He graduated from Rockhurst High School and has a Bachelor of Science and a Master of Business Administration from Rockhurst University. In addition to teaching, Mr. Day coaches in the football, basketball and track programs.

Classroom: Piper 122  ||  Tel: 602-264-5291, ext. 6284  ||

Mark Granger '86

Mr. Granger earned a Bachelor of Arts in psychology at the University of Notre Dame and a master's degree in educational leadership from Saint Joseph's University. He previously taught at Brophy before moving to Palm Desert to help start Xavier College Preparatory where, in addition to teaching, he served as the dean of students and campus minister. Mr. Granger also assists with Brophy's basketball program.
Classroom: Piper ||  Tel: 602-264-5291, ext. 6284  ||

John Taylor

Algebra 1, Geometry
Mr. Taylor earned a Bachelor of Arts in East Asian studies from Yale University. Originally from South Carolina, he came to Arizona in 2002 as a Teach for America corps member and taught in south Phoenix for seven years. He joined Brophy’s Math Department in 2009. His interests include archaeology, ancient writing systems, Russian literature and hiking. Mr. Taylor currently helps coordinate the Ad Majorem Community Program and coaches JV volleyball.
Classroom: Piper 121  ||  Tel: 602-264-5291, ext. 6284  ||

Breanne Toshner

Honors Pre-Calculus, AP Calculus
Ms. Toshner earned a Bachelor of Science in electrical engineering with a focus on circuits and semiconductors from ASU. In her time at ASU, she interned for both Medtronic and ON Semi. After graduating, she worked for a local architectural engineering firm for five years, where she was responsible for the electrical design on such projects as Phoenix Children’s Hospital, Del Sol Medical Center (El Paso), Dell Children’s Medical Center (Austin), Banner Gateway Cancer Center, John C. Lincoln Sonoran Health and Emergency Center and numerous other healthcare facilities in the Southwest region. She joined the Brophy faculty in 2013. Ms. Toshner’s interests include hiking, biking, yoga, healthy cooking, not-so-healthy baking, spoiling her dog, Lucy, and generally attempting to learn new skills (including ukulele, guitar, knitting and gardening).
Classroom: Piper 119  ||  Tel: 602-264-5291, ext. 6284  ||

Jerry Zander

Geometry, Probability and Statistics
A longtime Catholic educator, Mr. Zander joins the Brophy faculty after serving as assistant principal and interim principal at Notre Dame Prep. He also has taught at Archbishop Murphy High School in Everett, Wash., University High School in Tucson and Salpointe High School. Mr. Zander has a Bachelor of Science in mathematics education from the University of North Dakota and a Master's in educational leadership and policy studies from the University of Washington. In addition to teaching, he coaches in the basketball program.

Classroom: Piper 221  ||  Tel: 602-264-5291, ext. 6284  ||