Calc Classroom Tips TI-84 tutorials that actually help
For students, not engineers

TI-84 help that explains the whole screen

The TI-84 graphing calculator is essential for high school algebra, statistics, precalculus and AP exams. Our tutorials break every operation into short keystrokes, show you what the screen should look like, and fix the error messages that stop students mid-problem.

Browse tutorials Fix an error code
A TI-84 Plus CE graphing calculator on a desk beside a maths notebook and pencil

Start with these guides

Start hereTI-84 Plus vs TI-84 Plus CE

Which model to buy, and whether the colour screen is worth the extra money.

Exam rulesIs the TI-84 allowed on SAT, ACT & AP?

The calculator rules for every major US exam, in plain English.

Most readHow to graph a function on TI-84

From the Y= editor to a readable window, step by step.

StatisticsHow to find standard deviation

Sx, σx and what your teacher actually wants you to write down.

TroubleshootingTI-84 error codes and their fixes

ERR: SYNTAX, ERR: DOMAIN, ERR: INVALID DIM and the rest.

AlgebraHow to enter fractions on TI-84

The two fraction methods, and why one ruins your answer.

Why these guides are easier to follow

Exact keystrokes

Keys are written the way they are printed on the calculator — 2nd, MODE, STAT — so you never translate a symbol in your head.

You see the screen

Every step includes a screen figure showing what the display should look like, so you can tell instantly whether you are on track.

Errors explained first

When something goes wrong, the error page tells you the cause and the fix rather than repeating a manual you have already read.

statisticsHow to Find Standard Deviation on a TI-84 (Plus and CE)

how to find standard deviation on ti-84

graphing functionsHow to Graph a Function on a TI-84

how to graph a function on ti-84

algebraHow to Enter Fractions on a TI-84

how to enter fractions on ti-84

TI-84 errors we fix most often

Error codeERR: SYNTAX

The calculator could not parse the expression you typed, so it refused to evaluate it.

Error codeERR: DOMAIN

The value you gave a function or instruction lies outside the range it accepts, so no real answer can be returned.

Error codeERR: INVALID DIM

A plot, list or matrix has a dimension the calculator cannot use, so the operation is refused.

Exam calculator rules

Exam rulesSAT Calculator Policy: Is a TI-84 Allowed?

sat calculator policy

Exam rulesACT Calculator Policy: Is a TI-84 Allowed on the Maths Test?

act calculator policy

Exam rulesAP Calculator Policy: Which Exams Allow a TI-84?

ap calculator policy

Exam rulesCan You Use a TI-84 on an IB Exam? GDC Rules Explained

can you use ti-84 on ib exam

What a screen figure looks like

Here is the kind of figure that appears in every tutorial — an accurate drawing of the display after a specific set of keystrokes, so you can compare it against your own calculator before moving on.

A TI-84 home screen showing the ERR: SYNTAX menu. Option 2:Goto jumps the cursor to the character the calculator objected to.

Common TI-84 questions

Can a TI-84 solve equations automatically?

Yes, up to a point. On the TI-84 Plus and TI-84 Plus CE you can solve a single equation for one unknown with the interactive solver (MATH ▸ 0:Solver), and you can solve linear systems exactly with the PlySmlt2 app found in the APPS menu on the TI-84 Plus CE. The solver finds one numerical solution near a starting guess, so equations with several solutions need a different guess for each one. On the SAT, remember that some of these app tools are restricted — check the exam page before relying on them.

Can a TI-84 connect to a Chromebook?

A TI-84 Plus or TI-84 Plus CE cannot connect directly to a Chromebook through TI Connect software, because that software runs on Windows and macOS only. The practical options are: use a USB cable plus a Windows or Mac computer to transfer files, transfer calculator-to-calculator with a unit-to-unit link cable, or move programs as plain text files that you type or paste in. Texas Instruments also offers the TI Connect CE app for Chrome OS in some school deployments, but support varies — check with your teacher.

How do I clear or reset a TI-84?

Pressing 2nd then + (MEM) opens the memory menu, where 2:Reset gives you options to clear RAM, reset defaults like the window and mode settings, or reset everything including archived apps. Clearing RAM keeps the operating system and archive but wipes RAM lists, programs and settings. Follow the steps in our reset guide so you do not delete archived programs you still need.

Why is my TI-84 screen blank after I press ON?

The usual causes are dead or weak batteries, a display contrast turned all the way down, or an app or shell that has taken over the screen. First press 2nd and hold the up arrow to raise the contrast. If that fails, install fresh alkaline batteries, then press ON. If the calculator is still blank after that, remove the batteries, hold and release ON, and reinsert the batteries — this performs a hard reset of the RAM.

About Calc Classroom Tips

We write for the student who is stuck at home at 9pm the night before a test, not for the engineer reading a reference manual. Content is checked against official Texas Instruments documentation and official exam board publications, and every exam page is dated so you can see how current it is.

This site is independent. We are not affiliated with Texas Instruments, the College Board, ACT or the IB — read the full disclaimer.