This Little Engineer: A Think-And-Do Primer (This Little...)

Joan Holub has authored and/or illustrated over 140 children's books, including the Goddess Girls series, the Heroes in Training series, the New York Times bestselling picture book Mighty Dads (illustrated by James Dean), and Little Red Writing (illustrated by Melissa Sweet). She lives in North Carolina and is online at JoanHolub.com.

Suzanne Williams is a former elementary school librarian and the author of over seventy books for children, including the award-winning picture books Library Lil (illustrated by Steven Kellogg) and My Dog Never Says Please (illustrated by Tedd Arnold), and several chapter book and middle grade series. She also coauthors the Goddess Girls and Thunder Girls series with the fantastic Joan Holub. Visit her at Suzanne-Williams.com.

Yuyi Chen began her career as a 3-D artist making video games, then realized her true passion is illustrating for children. She also likes to spend her time reading, listening to her children laugh, and pretending she's a competitive cake decorator. She lives in Washington with her two sons.