Charlie Piechart and the Case of the Missing Hat: A Fun Detective Picture Book About Solving Geometry Puzzles for Children (Ages 4-8)

Charlie Piechart’s second math mystery takes place at school—when a purple, sparkly cone-shaped princess hat goes missing! Margot needs her hat in time for the school play (today!), so Charlie and his dog companion, Watson, are on the case—finding evidence of sparkles and purple paint and keeping on the lookout for geometric clues that might lead to the missing hat.

Fantastic colors, clever characters, and beginning concepts in geometry will go down easy as pie, while activities at the end of the book will reinforce the shapes and the story. Dynamic duo Eric Comstock and Marilyn Sadler bring the right level of energy and entertainment for this engaged picture book audience.

Marilyn Sadler has written more than 35 books and has won 12 awards. She received 1 Emmy nomination for her animated series, Handy Manny (which averaged around 2 million viewers a week!). She is the author of the P. J. Funnybunny books and the books about Alistair.

Marilyn lives in Ohio with her cat, Alice, who’s shaped like a half sphere when she is sleeping and who acts like a princess when she’s awake. Marilyn is 1/2 of the team that created the world of Charlie Piechart. Visit her online at www.marilynsadler.net. 

Eric Comstock has illustrated and coauthored 3 books about Charlie Piechart. Eric lives in Austin, Texas. Eric loves shapes. He prefers his grilled cheese sandwiches cut in triangles, not rectangles. He likes to drink his coffee out of a cylinder with a handle. And his ice cream must always be eaten from a cone. If you look at his illustrations, you’ll see characters that are made out of triangles, squares, rectangles, and circles. You can see what shapes Eric’s using lately at ericcomstock.us.