The Zills family is in Egypt to find the burial chamber in a pyramid. While exploring, Matt and Bibi get trapped in the tomb. Geometric hieroglyphs on the walls

When Sir Cumference and his wife, Lady Di of Ameter, host a massive surprise birthday party for the king, they must figure out a way to quickly count all the gu

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

As Zero searches to find his place, he learns of his additive and multiplicative identities, and then he establishes place value.

In this introduction to polygons, a triangle convinces a shapeshifter to make him a quadrilateral and later a pentagon, but discovers that where angles and side