Theoni Pappas

Theoni Pappas (born 1944)^[1] is an American mathematics teacher known for her books and calendars concerning popular mathematics.

Theoni Pappas
Born	1944 (age 80–81)
Alma mater	University of California, Berkeley Stanford University

Pappas is a graduate of the University of California, Berkeley, and earned a master's degree at Stanford University. She became a high school mathematics teacher in 1967.^[2]

She is the author of books including:

• Mathematics Appreciation (1986)^[3]
• The Joy of Mathematics (1986)^[4]
• Greek Cooking for Everyone (with Elvira Monroe, 1989)
• Math Talk: Mathematical Ideas in Poems for Two Voices (1991)^[5]
• More Joy of Mathematics: Exploring Mathematics All around You (1991)^[6]
• Fractals, Googols, and Other Mathematical Tales (1993)
• The Magic of Mathematics: Discovering the Spell of Mathematics (1994)^[7]
• The Music of Reason: Experience the Beauty of Mathematics through Quotations (1995)^[8]
• Math for Kids & Other People Too! (1997)^[9]
• The Adventures of Penrose: The Mathematical Cat (1997)^[10]
• Mathematical Scandals (1997)^[11]
• Math-a-Day: A Book of Days for Your Mathematical Year (1999)^[12]
• Mathematical Footprints: Discovering Mathematical Impressions All around Us (1999)^[13]
• Math Stuff (2002)^[14]
• Further Adventures of Penrose the Mathematical Cat (2004)^[15]
• Mathematical Snippets: Exploring Mathematical Ideas in Small Bites (2008)^[16]
• Numbers and Other Math Ideas Come Alive (2012)^[17]
• Do the Math! Math Challenges to Exercise Your Mind (2015)^[18]
• More Math Adventures with Penrose the Mathematical Cat (2017)
• Mathematical Journeys: Math Ideas and the Secrets They Hold (2021)

Additionally, she has written a series of annual mathematics calendars in various editions.^[19]