Sir Cumference and Lady Di need a baker to prepare a special dessert for the annual Harvest Faire. Two bakers compete to see whose dessert is most popular. When Pia of Chartres and Bart Graf have trouble keeping track of the votes ...

When young Per visits her uncle Sir Cumference and his family, she learns how to play the game, 'Inners and Edges.' After she finds a clue linking the game to the mysterious castle on the island of Immeter, she must figure out how to ...

Sir Cumference, Radius, and Sir Vertex search for Edgecalibur, the sword that King Arthur has hidden in a geometric solid.

Sir Cumference and Lady Di planned a surprise birthday party for King Arthur, but they didnt expect so many guests to show up. How many lunches will they need? And with more guests arriving by the minute, what about dinner? Sir Cumfer...

While riding through the forests of Angleland, cousins Per and Radius realize they are lost and are desperate for a map to guide them home. Soon they come across a mysterious house in the hills. Inside they find a map to a treasure be...