Charlie Piechart and the Case of the Missing HatBook - 2016
This 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.
Publisher: New York, NY : Katherine Tegen Books, an imprint of HarperCollins Publishers, 2016
Edition: First edition
Branch Call Number: FICTION Com
Description: 1 volume (unpaged) : color illustrations ; 27 cm