The Brilliant Calculator

How Mathematician Edith Clarke Helped Electrify America

by Jan Lower
illustrated by Susan Reagan

Review posted May 14, 2025.
Calkins Creek, 2023. 40 pages.
Review written November 14, 2023, from a library book.
Starred Review
2024 Mathical Book Prize Honor Book, Ages 8-10.

There's no way I won't love it: A picture book biography that has "Mathematician" in the title!

This picture book tells the story of Edith Clarke, America's first female electrical engineer, whose long and varied career helped produce the technology that keeps power lines from losing power over distance.

That's the most easily understandable of her achievements. This author does a good job of explaining that she was brilliant, that she used mathematics, that she proved herself when men didn't want to hire her, and that she created inventions that made calculations easier and ultimately make our lives better today.

I like that even though her accomplishments were technical, the author and illustrator presented them in a way kids can understand. I also liked the quotes from Edith sprinkled throughout the book, with this one at the end of the main text, before the six pages of back matter:

There is a future for women in engineering, and some day the only limitation will be their own lack of ability, as we are fast approaching an age in which men and women will be measured by their worth as individuals.

May it be so.