Taking Sides: Exploring Geometry

Teaches young students about basic concepts of geometry, such as angles and planes.

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 ...

King Arthur and his knights use different geometry concepts to solve various problems.

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.

The seventh title in the popular Sir Cumference series introduces the mathematical concept of coordinate geometry in a unique and memorable way.

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

Teaches Young Readers About Shapes And Patterns Using The Seasons Of The Year And Pictures Of Nature.

Sir Cumference, Lady Di of Amter, and Radius are back in their second Math Adventure! This time, a potion has changed Sir Cumference into a fire-breathing dragon. Can Radius change him back? Join Radius on his quest through the castle to solve a ri...

Have you ever wondered how to measure your pizza, or how much ice cream is in your ice-cream cone? Basic principles of geometry, including measuring two-dimensional and three-dimensional shapes, attributes of various shapes, and formulas for finding...