Education Technology

# Activities

• ##### Subject Area

• Math: Middle Grades Math: Algebraic Thinking
• Math: Middle Grades Math: Geometry
• Math: Middle Grades Math: Problem Solving

6-8

90 Minutes

• ##### Device
• TI-73 Explorer™
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition
• TI-Navigator™
• ##### Other Materials
Some type of round cereal, small cup to hold the cereal, worksheet and page with different size circles.

## Going Around in Circles

#### Activity Overview

Help students discover the relationship between diameter and circumference with cereal. As they make the connection between the number of pieces of cereal it takes to go across the circle and then around the circle it becomes easier to help them understand that the circumference is about three times the diameter.

#### Before the Activity

Make copies of the student worksheet and have the pages with different size circles available for students.

You may want to review entering data in lists on the calculator.

#### During the Activity

Pass through the classroom and observe student data collection and recording. Make sure students are using the largest part of the circle to measure the diameter.