At lunch you can pick pizza or chicken nuggets. If you pick pizza, the chicken nuggets are you...
Opportunity cost
A majority of Anna's classmates voted for him to be the line leader.
Majority rule
Viridiana's mom made cookies for her class. Every student was given part of the treat.
Sharing
One name will be drawn from the hat to take Buddy, our class pet, home for the weekend.
Lottery
When you earn dollars in music and you buy prizes, that is...
Price
Jamaika and her older brother were the first ones in line for a new toy. Only the first 25 people in line could get a toy.
First-come, first-serve
Fatima needed a new school notebook. Elena needed a new book to read. Elena gave Fatima a new notebook and Fatima gave Elena a new book.
Bartering
Selena ran the fastest in a race and won. She received a gift card.
Contest