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Publisher's Summary

A funny and pun-filled retelling of “The Sword in the Stone” that introduces listeners to 3-D geometry.   

King Arthur has hidden his sword, Edgecalibur, and issued a challenge to the knights. The first knight to find the sword will be the next king. Can Sir Cumference and Lady Di point Radius' best friend, Vertex, in the right direction? Will Vertex's sharp thinking give him the edge?  

Join Sir Cumference, Lady Di of Ameter, and their son, Radius, in this new adventure where they race to help Vertex find the sword and discover the secrets of cubes, pyramids, cylinders, and cones.

©2019 Charlesbridge Publishing (P)2019 Charlesbridge Publishing

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