Sectors and Pizza:

Bring in two (or more) pizzas of different sizes.  Have the pizzas cut so that there will be enough slices for the entire class.  Before eating, have students determine which slices will contain "more" pizza (by finding the areas of sectors).  Cut a larger pizza into 16 pieces and a smaller pizza into 8 pieces to keep the students guessing as to which piece is "more" pizza.

 

If a third pizza is used, do not cut the pizza.  Ask students to determine into how many pieces should this third pizza (of a differing diameter) be cut so that the pieces will contain approximately as "much" pizza as each slice of the larger pizza.

Enjoy the pizza!!