Sir Cumference and the Dragon of Pi (A Math Adventure)

  • Sir Cumference and the Dragon of Pi
  • Sir Cumference and the Dragon of Pi A Math Adventure
  • Sir Cumference and the Dragon of Pi A Math Adventure
  • Sir Cumference and the Dragon of Pi A Math Adventure
  • Math Understood: Sir Cumference and the Dragon of Pi
  • Sir Cumference and the Dragon of Pi A Math Adventure
  • Sir Cumference and the Dragon of Pi A Math Adventure
  • Sir Cumference and the Dragon of Pi
  • Sir Cumference and the Dragon of Pi
  • Sir Cumference And The Dragon Of Pi
«
»
Amazon Price: $7.95 $5.93 You save: $2.02 (25%). (as of June 23, 2017 12:04 am – Details). Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on the Amazon site at the time of purchase will apply to the purchase of this product.

Sir Cumference, Lady Di of Ameter, and Radius are back in their second Math Adventure! This time, a potion has changed Sir Cumference into a fire-breathing dragon. Can Radius change him back? Join Radius on his quest through the castle to solve a riddle that will reveal the cure. It lies in discovering the magic number that is the same for all circles.