What's Your Angle, Pythagoras? (Charlesbridge Math Adventures)
Sir Cumference and the Knights of the First Round Table (A Math Adventure)
Sir Cumference and the Dragon of Pi: A Math Adventure
Sir Cumference: And the Great Knight of Angleland
Sir Cumference and All the King's Tens (Charlesbridge Math Adventures) (Charlesbridge Math Adventures (Paperback))
Sir Cumference and the Isle of Immeter (Math Adventures)
Sir Cumference and the Sword in the Cone: A Math Adventure
A Place for Zero: A Math Adventure (Charlesbridge Math Adventures) (Charlesbridge Math Adventures (Paperback))
The Adventures of Penrose the Mathematical Cat
A Remainder of One
Further Adventures of Penrose the Mathematical Cat
One Hundred Hungry Ants
Arctic Fives Arrive
Inchworm and a Half