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Arithmetic
At Northfield, Arithmetic is a respected component of the Seven Liberal Arts. The poetry found in the most intricate mathematical equations speaks to the glory of the ordered universe and to the glory of the God who made it. From the Fibonacci sequence to Da Vinci’s golden rectangle to the computations that allowed us to go to the moon, arithmetic is fundamental to life and to Northfield education. Graduation requirements include the completion of Algebra II and Geometry.

On Arithmetic by Teresa Engelmann
Math is the language of order and balance in the universe. Everything from the smallest parts of the atom to the mighty sequoia tree, the blue whale, and the largest and farthest galaxy are examples of mathematical balance. We can understand these things, their composition, size, and distance from us, more fully through the use of mathematics. Mathematics shows us the unchanging nature of our God. When we understand the essence of mathematics and its simple and unchanging nature, we become that much closer to understanding the nature of God.



Teresa Engelmann
Teresa Engelmann Mrs. Engelmann is Head of Northfield School’s Department of Arithmetic. She teaches Basic Math, Pre-algebra, Algebra I, Algebra II, Geometry, Trigonometry, and Algebra III.
Adrienne Harmon

Mrs. HarmonMrs. Harmon teaches a math tutorial. She also teaches Spanish in our Languages Department.

Lisa Segard
Lisa SegardMrs. Segard teaches Trigonometry for the Upper School.

"Those who assert that the mathematical sciences say nothing of the beautiful or the good are in error. For these sciences say and prove a great deal about them."
      —Aristotle