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Children's book Author MK Collier

Making math & nature entertaining through children’s books

Helping kids engage with nature and math.

I believe learning can be fun when successful. My books help kids ages 3+ whether they want to visit with sea creatures or learn about metric measuring in the jungle.

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Children's Book Author MK Collier

About the author, MK Collier.

I grew up outside New Orleans in a happy world where all things are possible. My love for books was fostered by my mom, Julia, who read aloud books by Dr. Seuss, Beatrix Potter, and Louisa May Alcott.

My father, Doyle, encouraged me to follow my dreams. He instilled in me the values of gratitude, kindness, and hard work.

My background is in teaching, mathematics, and management. 35 years ago, I devised a mnemonic learning device for the metric system to help children learn it easily. My goal is to make education entertaining and provide tools to improve educational outcomes.

When I’m not working on a book or educational tool, I enjoy throwing pottery, gardening, raising butterflies, and bicycling. I love to travel and dream of my happy place – the ocean! But most of all, I love spending time with my amazing husband, Roger Rankin, who makes my projects possible.

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Sea Moon See Book Cover


Plus 9.45% Tax + $5 Shipping

Written by MK Collier
Illustrated by Valerie Clark

Create special bedtime memories with this beautifully illustrated, 32-page book that takes you under the sea! Visit with octopuses, starfish, dolphins, and more interesting ocean friends.

Erazmo a Metric Measuring Monkey


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Written by MK Collier
Illustrated by Joe Huffman

Erazmo visits friends to collect presents for baby Joey. Which way does he go? Share the adventure in this 40-page book to learn the metric system.


Plus 9.45% Tax + $8 Shipping