Skip to main content
NAGC25 Main banner
Evaluation

Lesson Roundtable

Lesson Roundtable 24: Learning Circle Through Math History

Saturday, November 15, 2025
8:00 AM - 9:00 AM ET
Location: Convention Center, Exhibit Hall B
Grade Level: 6-8

  • Enzhi Zhu

    Doctoral Student & Research Assistant
    Purdue University
    West Lafayette, Indiana, United States

Explore the history and mathematics of π through ancient methods and use tools to measure the circle to better understand the geometry of circles.

Learning Objectives:

  • Describe how ancient people estimated p. Calculate the approximate value of p.
  • Identify radius, diameter, circumference, and area of circles.
  • Understand and explain the derivation of the formula for the circumference and area of a circle. Apply the knowledge circle to real-world problems.