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.
Enhance your teaching with a hands-on learning experience.
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.
Texas Instruments
9-12
15 Minutes
TI Connect™
TI Connectivity CableUnit-to-Unit link cables
Students construct parabolas using the focus and directrix definition. They also explore how the location of the focus with respect to the directrix affects the shape of the parabola.
Students will use the given focus and directrix and the definition of a parabola to construct their own parabola. They will need to justify the steps followed to complete the construction.
An extension problem has students explore how the location of the focus with respect to the directrix affects the shape of the parabola.
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.