Solution 34616: Inverse Cosine of the Tangent of -5π/4 on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
...s and TI-84 Plus family of graphing calculators? This is a classic problem with floating point arithmetic that is used in calculators and almost all computers. The main problem is tan(-5*π/4). The TI-83 Plus and TI-84 Plus family of graphing calculators only perform calculations with 14 digits i...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/34616
Solution 33711: Best Care Practices for TI Products With a TI Rechargeable Battery.
...ors: environment, storage, the number of charge/discharge cycles, and level of discharge/charge. To extend battery lifespan and battery life, we recommend following these guidelines: 1. Keep TI calculators in a cool, dry place, as close to room temperature as possible Batteries are design...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/general-information/33711
Solution 37295: Troubleshooting a TI-84 Plus CE or TI-84 Plus C Silver Edition That Will Not Turn On, Charge, Function Properly, Displays a “Validating Operating System…” Message or Flashes White.
...ons, programs, and data. If at all possible, please backup all your files by copying data files and programs from your calculator to a folder on your computer using TI Connect CE™ Software. 1) Attempt to charge the calculator by connecting to a computer or wall adapter, if the calculator boots up...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/troubleshooting-messages-unexpected-results/37295
Solution 37819: Troubleshooting a TI-84 Plus CE or TI-Nspire™ CX handheld that is not recognizing the TI-Innovator™ Hub
...power. 3. Make sure your calculator has the latest operating system. To update to the latest operating system please go to: https://education.ti.com/latest 4. Make sure the end of the USB cable connected to the calculator is inserted completely. 5. Unplug the USB cable from the TI-Innovator...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/troubleshooting-messages-unexpected-results/37819
Dividing a Fraction by a Fraction
This activity uses number lines along with equivalent fractions to help students develop a method for dividing fractions.https://education.ti.com/en/activity/detail/dividing-a-fraction-by-a-fraction
Creating Equivalent Fractions
This activity is intended to be a deeper investigation into equivalent fractions, going beyond recognizing and identifying them. Students should know that two numbers are equivalent (equal) if they are located at the same point on the number line and that the larger of two numbers is the on...https://education.ti.com/en/activity/detail/creating-equivalent-fractions
Quick Start Guide: TI-Innovator™ Rover
The TI-Innovator™ Rover is an educational robotic vehicle that students program with their TI graphing calculators to explore topics in math, science, coding and STEM. The Quick Start Guide highlights highlight steps to get started with a TI graphing calculator and Rover, including making Rover ...https://education.ti.com/en/activity/detail/quick-start-rover