César's Cerulean Surprise
Jenny Lacika, author
Jenny Lacika grew up in Santa Fe, New Mexico, where she learned to work together with an older brother and a younger brother. She graduated from MIT after discovering how math could break down walls and open doors. Jenny is the author of Again, Essie?, winner of the Mathical Award, and Beto's Berry Treasure. She lives in her hometown with her husband and two kids.
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Laura Sandoval Herrera, illustrator
Laura Sandoval Herrera is a Brooklyn-based illustrator and designer born in Mexico. She earned her BFA in product design from Parsons School of Design and is pursuing her MFA in illustration at School of Visual Arts in New York. When she isn't drawing or painting, she's usually playing with her dog, Scribble, and her cat, Potato. This is her debut book.
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- Coming soon!
School Library Journal
A bright story that demonstrates the ways we use math in everyday life. César wants to borrow one of his little sister’s crayons, but she won’t let him touch them. Only Gabi can give him the crayon he wants, if only she can figure out what cerulean is. Thus ensues a clever process of elimination, with territorial Gabi facing off against the increasingly frustrated César. It’s a window into an all-too-familiar sibling dynamic, a slice of life many readers can identify with. Along with the subtle math hints, both Gabi and César sprinkle in Spanish words. Further explanation can be found in an author’s note, along with interactive tips for adults, showing how to encourage the math connections during reading. VERDICT A cozy sibling-oriented spotlight on daily math usage.
English Hardcover
ISBN: 978-1-62354-439-3
English Paperback
ISBN: 978-1-62354-440-9
Ages: 3–6
Page count: 32
91/2 x 91/2
Publication date: October 21, 2025