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César's Cerulean Surprise
Celebrate diversity, math, and the power of storytelling!
A math picture book series for preschoolers and kindergarteners with relatable stories that reflect little kids’ everyday experience.
César wants to borrow his little sister Gabi’s brand-new cerulean crayon. She doesn't know what color that is, though, and she won't let him show her! Instead, she asks him yes-no questions to rule out crayons. It's like a game of 20 Questions—fun for Gabi and frustrating for César!
A playful exploration of logic featuring Chicanx (Mexican American) characters and Spanish color words.
Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC.
A math picture book series for preschoolers and kindergarteners with relatable stories that reflect little kids’ everyday experience.
César wants to borrow his little sister Gabi’s brand-new cerulean crayon. She doesn't know what color that is, though, and she won't let him show her! Instead, she asks him yes-no questions to rule out crayons. It's like a game of 20 Questions—fun for Gabi and frustrating for César!
A playful exploration of logic featuring Chicanx (Mexican American) characters and Spanish color words.
Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC.
32 pages, Hardcover
Published October 21, 2025
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Displaying 1 - 6 of 6 reviews
December 29, 2025
Colors, numbers, language, and more in this storytelling picture book. I love how Jenny keeps young readers eager for Gabi to give Cesar the cerulean crayon he desperately needs to create something special for Gabi, that's revealed by Laura's vibrant illustrations at the end of the book.
Overall, a great read that incorporates bilingual language, math concepts, and various colors within a crayon box.
Overall, a great read that incorporates bilingual language, math concepts, and various colors within a crayon box.
This entire review has been hidden because of spoilers.
July 19, 2025
3.5 stars
I read a digital copy courtesy of the publisher
Cesar wants to create something for little sister Gabi's birthday but his crayons are worn out. Gabi just got a new box of crayons, will she share her cerulean crayon?
I read a digital copy courtesy of the publisher
Cesar wants to create something for little sister Gabi's birthday but his crayons are worn out. Gabi just got a new box of crayons, will she share her cerulean crayon?
December 16, 2025
Teaches what colors are, how to narrow down a choice. I liked the inclusion of Spanish words and colors. Lots to learn here for elementary kids.
February 24, 2026
Super fun! God for anyone and children who are looking into learning spanish words too.
March 1, 2026
Trying to ask the best questions to eliminate crayon colors and find the cerulean. (But also, a slightly-annoying-sibling story.)
January 17, 2026
Holt-Delhi library PJ story time 03-25-2026
Displaying 1 - 6 of 6 reviews