First graders in Nancy Carillo's class at Rolling Hills explained the difference between goods and services, and began to hone their entrepreneurial skills, during a "Shopping Day" in their classroom on Friday.

The students operated stores selling goods such as bracelets and bookmarks and services such as pencil sharpening and desk cleaning

Principal Jessica Santarpia, superintendent Dr. Jordan Cox and other district administrators arrived in the class midday to serve as shoppers

The mystery bag store was a particular hit, with much joy shared when a pair of shoppers received erasers as their surprise for shopping there.