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September 09, 2019

Understanding Contracts

Grade Level:



In this lesson, students are asked which of two chocolate bars – one with nuts, one without – they prefer. A single representative is taken from each preference group. These representatives are given the chocolate bar that they prefer less, motivating a contractual trade. One student unknowingly has an empty wrapper, eliciting debate after the trade is completed. The class concludes by discussing possible equitable solutions.  


Time needed:

~30 minutes


Materials required:

Understanding Contracts Lesson Plan


National Curriculum Standards for Social Studies, National Council for the Social Studies:

Theme 6: Power, Authority, and Governance

Theme 10: Civic Ideals and Practices