Sir Cumference and lady Di planned a surprise party for King Arthur, but no one anticipated so many guests showing up. How many chairs do they need? And the guests need to be fed! Sir Cumference and Lady Di must figure out a quick way to count the gues A clever introduction to place value. Sir Cumference and Lady Di planned a surprise birthday party for King Arthur, but they didn't expect so many guests to show up. How many lunches will they need? And with more guests arriving by the minute, what about dinner? Sir Cumference and Lady Di have to figure out a quick way to count the guests to bring order to the party. Sir Cumference and his friends have been entertaining young and old alike for years as they introduce important math concepts with clarity and humor.