Getting to Know the Project: Note to Teachers


Welcome to the Selling Geometry Project. The project will require approximately five weeks to complete and will address the key Common Core State Standards (CCSS) for geometry in the following clusters:

  • Experiment with transformations in the plane.
  • Understand congruence in terms of rigid motions.
  • Prove geometric theorems.
  • Make geometric constructions.


The Selling Geometry Project is designed to engage students in the study of geometry by discussing its history and foundation, including something about its founder, Euclid. In addition to historical facts about geometry, students will learn fundamental geometric concepts and figures and basic methods of transformations, and will practice manipulating shapes. 

They will also review the eight Mathematical Practices of the CCSS. They must then synthesize this information into a thoughtful presentation, using a web page or other format that demonstrates their understanding of geometry and how it applies to their world. By creating a marketing message aimed at teens, they will also demonstrate their ability to connect the goals of mathematics with the goals of teens.

Project-based learning (PBL) is designed to focus students on solving an open-ended problem and providing a solution to the problem through working in teams. Keeping this perspective in mind will be helpful. The new CCSS stress application and inquiry. 

Your goal is to have students learn the fundamentals of geometry, as defined by Unit 1 Traditional Geometry or Unit 5 Integrated Pathways standards, but also to coach them through a process of thinking about geometry.