Author and publisher: Mac Barnett and Jon Klassen, Walker Books
Summary: This book uses geometrical shapes as characters. One day, Triangle and Square come to visit Circle. Together, they play hide-and-seek. Circle tells his friends the one rule which is not to go behind the waterfall. However, Triangle and Square do not listen to their friend; behind the waterfall, they enter a dark cave. But, they are not the only ones there…
Suitable for students in years: 3-4