Find where to buy the TI-84 Plus CE Python graphing calculator in a variety of bold, fun colors.
Download free 90-day trial versions of the most popular TI software and handheld emulators.
Learn about the math and science behind what students are into, from art to fashion and more.
Get ready for back to school with T³™ Webinars to enhance your teaching and TI technology skills.
We are here to help with distance learning resources for schools and districts.
Update OS, transfer files andtake screen captures for yourTI-Nspire™ CX II graphing calculator.
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.
TI websites use cookies to optimize site functionality and improve your experience. To find out more or to change your preferences, see our cookie policy page. Click Agree and Proceed to accept cookies and enter the site.
You can control your preferences for how we use cookies to collect and use information while you're on TI websites by adjusting the status of these categories.