Sharing Sandwiches

1. Sharing Sandwiches

2. Mrs. Bernhardt’s fourth-grade class traveled on a field trip to Raleigh. They split into four groups to visit different buildings. The school provided a lunch of submarine sandwiches for each group. Each group ate lunch at a different site.

3. When they stopped for lunch, the subs were cut and shared as follows: • The group at the Capitol Building had 4 people and shared 3 subs equally. • The group at the Legislative Building had 5 people and shared 4 subs equally. • The group at the NC Museum of Natural Sciences had 8 people and shared 7 subs equally. • The group at the NC Museum of History had 5 people and shared 3 subs equally.

4. When the children returned from the trip, they began to argue that the amount of sandwich they each ate was not equal. Were the children right? Or did everyone get the same amount?

5. Group Time Work with your group to determine if the children were correct. Create a poster that shows your group’s strategies for solving. Be sure your poster is clearly labeled so that other groups can discuss your solution strategies.

6. Gallery Walk Discussion Questions 1. Did this group have the same fractional parts for each student on the trip as your group? 2. What do you notice about the models each group used? 3. Compare this group’s models to your own. 4. Compare this group’s solution strategy to your own. How are they alike? Different? 5. If a group’s answer is different, why do you think so? 6. Which group’s strategy was most efficient?