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.

What does a circle look like? Have you seen one today? Find out about circles with this fun song and book!

Rolie Polie Olie, a round robot living on a planet where everything is round, enjoys a busy day with his family and then is too wired to go to bed at night.

Simple text and pictures explore the different kinds of circles that can be found in the city.

Join Trek and his friends as they search for a square, a circle, a triangle, and a rectangle.

If you were a circle, you would be completely round.

George only likes things that are square like himself until a dream reminds him of how nice round can be.

Finding circles everywhere, a grandfather and his granddaughter meditate on the cycles of life and nature.