The Mega Mall Problem - The Mega Mall. Peg and Cat search the enormous Mega Mall for the teens so they can all enter the Zebra Guy dance contest. Primary Content: Attributes of objects; Secondary Content: Maps. The Cleopatra Problem - Ancient Egypt. When Peg and Cat are playing marbles among the pyramids with Queen Cleopatra, Peg's marble is stolen by a mysterious man with an orange triangular beard. Primary Content: Using a pan balance to compare weight; Secondary Content: Triangles.