Geometry

Charlesbridge Books (X) - Geometry (X)

What's Your Angle, Pythagoras?

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Young Pythagoras can't seem to stay out of trouble. Every time he tries to help, people get angry. What's a curious kid to do?


On a trip to Egypt, Pythagoras' curiosity helps him discover the secret of the right triangle. A clever introduction to the Pythagorean Theorem.

What's Your Angle, Pythagoras?

Sir Cumference and the Isle of Immeter

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When young Per visits her uncle Sir Cumference, aunt Lady Di of Ameter, and her cousin Radius, they teach her how to play Inners and Edges. After Per finds a clue linking the game to the mysterious castle of the Countess Areana, she and Radius sail to the island of Immeter. There, they have to decipher cryptic clues while avoiding a sea serpent. To unlock the island's secret, Per has to figure out how to find the perimeter and area of a circle. Only then can she become Per of Immeter.


Sir Cumference and the Isle of Immeter

Sir Cumference and the Sword in the Cone

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King Arthur has issued a challenge. The first knight to find the sword, Edgecalibur, will be the next king. Sir Cumference, Lady Di of Ameter, and Radius help their friend, Vertex, find the sword.


Keywords: king, heir, geometry, math, quest, puzzles

Sir Cumference and the Sword in the Cone

Sir Cumference and the Great Knight of Angleland

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On a quest to earn his knighthood, Radius uses different geometry concepts to find and rescue a missing king.


Keywords: king, heir, geometry, math, quest, puzzles, knight

Sir Cumference and the Great Knight of Angleland

Sir Cumference and the First Round Table

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What would you do if the neighboring kingdom were threatening war? Naturally, you'd call your strongest and bravest knights together to come up with a solution. But when your conference table causes more problems than the threat of your enemy, you need expert help. Enter Sir Cumference, his wife Lady Di of Ameter, and their son Radius. With the help of the carpenter, Geo of Metry, this sharp-minded team designs the perfect table conducive to discussing the perfect peace plan. Thanks to Sir Cumference and the First Round Table, even the most hesitant will be romancing math.

Sir Cumference and the First Round Table

Sir Cumference and the Dragon of Pi

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When Sir Cumference drinks a potion which turns him into a dragon, his son Radius searches for the magic number known as pi which will restore him to his former shape.


Keywords: king, heir, geometry, math, quest, puzzles, dragon

Sir Cumference and the Dragon of Pi