Minnesota Academic Standards
MN.3. Grade 3: Foundations of Social Studies
3.2.3. Fundamental Concepts
220.127.116.11. Individuals, businesses and governments interact and exchange goods, services and resources in different ways and for different reasons; interactions between buyers and sellers in a market determines the price and quantity exchanged of a good, service or resource.
18.104.22.168.2. Explain that consumers have two roles—as sellers of resources and buyers of goods and services; explain that producers have two roles—as sellers of goods and services and buyers of resources.