Download free 90-day trial versions of the most popular TI software and handheld emulators.
Check out TI Rover activities that put math, science and coding in motion.
Customize your summit experience with sessions on math, STEM, coding and more.
TI Connect™TI Connect™ CE
In this activity, students explore the relationship between a circle's circumference and its diameter. This will lead students to their own discovery of a value for pi.
Students explore the diameter and circumference of a circle. They use the Cabri™ Jr. app to construct a circle.
Students construct the diameter of a circle, measure it, and record their answer. Then they use the Measurement tool to find the circumference of the circle.
Changing the size of the circle, students will observe the value of the ratio of the circumference to the diameter. On the Home screen, they can confirm these ratios.
© Copyright 1995-2018 Texas Instruments Incorporated. All rights reserved.