Theoni Pappas (born 1944) is an American mathematics teacher known for her books and calendars concerning

popular mathematics Popular mathematics is the presentation of mathematics to an aimed general audience. The difference between recreational mathematics and popular mathematics is that recreational mathematics intends to be fun for the mathematical community, and p ...

. Pappas is a graduate of the

University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant univ ...

, and earned a master's degree at

Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is considere ...

. She became a high school mathematics teacher in 1967. She is the author of books including: *''Mathematics Appreciation'' (1986) *''The Joy of Mathematics'' (1986) *''Greek Cooking for Everyone'' (with Elvira Monroe, 1989) *''Math Talk: Mathematical Ideas in Poems for Two Voices'' (1991) *''More Joy of Mathematics: Exploring Mathematics All around You'' (1991) *''Fractals, Googols, and Other Mathematical Tales'' (1993) *''The Magic of Mathematics: Discovering the Spell of Mathematics'' (1994) *''The Music of Reason: Experience the Beauty of Mathematics through Quotations'' (1995) *''Math for Kids & Other People Too!'' (1997) *''The Adventures of Penrose: The Mathematical Cat'' (1997) *''Mathematical Scandals'' (1997) *''Math-a-Day: A Book of Days for Your Mathematical Year'' (1999) *''Mathematical Footprints: Discovering Mathematical Impressions All around Us'' (1999) *''Math Stuff'' (2002) *''Further Adventures of Penrose the Mathematical Cat'' (2004) *''Mathematical Snippets: Exploring Mathematical Ideas in Small Bites'' (2008) *''Numbers and Other Math Ideas Come Alive'' (2012) *''Do the Math! Math Challenges to Exercise Your Mind'' (2015) *''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.

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Further reading