This is a joint blog post by Kara Shane Colley, the author of My Hundred Friends that is soon to be published at Natural Math, and Dr. Maria Droujkova, the founder of Natural Math. We’ll be posting periodic updates about the book on the blog. Maria: The book campaign hit 100% on June 26 – THANK YOU! Kara: I’ve been beta reading middle grade and young adult manuscripts for two of my friends since 2015. Kerry Duff has stories pouring out of her. She has written several novels a

Math is more fun in color. Lovingly drawn by Maria Droujkova of Natural Math.

Maria Droujkova, founder of Natural Math, made a Juneteenth message with "My Hundred Friends"-inspired number-characters.

I am proud to be featured on the Dartmouth Physics website. Dartmouth alum Kara (Relyea) Colley '98 has made a successful career out of math education and curriculum writing. Her latest endeavor, My Hundred Friends, is a children's book designed to teach about factors, multiples, and primes using approachable and joyful cartoon characters. In collaboration with illustrator Coley Nielsen and Natural Math Publishing, Kara is currently crowdfunding for their book. You can suppo

This is a joint blog post by Kara Shane Colley, the author of My Hundred Friends that is soon to be published at Natural Math, and Dr. Maria Droujkova, the founder of Natural Math. We’ll be posting periodic updates about the book on the blog. I like how it’s funny and learnful. Elizabeth, 4th grade reader Maria: In My Hundred Friends by Kara Shane Colley, the math of factors and multiples is friendship. It’s a cozy little world, inviting readers to play and explore. Fr

This is a joint blog post by Kara Shane Colley, the author of My Hundred Friends soon to be published at Natural Math, and Dr. Maria Droujkova, the founder of Natural Math. Maria: In My Hundred Friends by Kara Shane Colley, the math of factors and multiples is friendship. It’s a cozy little world, inviting readers to play and explore. From April 27 to June 27, 2026, head to My Hundred Friends crowdfunding campaign to pre-order hardcover copies for your family or group, reser

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