Is A Ti 84 Calculator Allowed On The Act

A quick and easy guide to the official ACT calculator rules.

ACT Calculator Policy Checker

Answer the questions below to determine if your specific calculator is likely permitted for the ACT Math Test.

Understanding the ACT’s Calculator Rules

Navigating the official ACT calculator policy can be confusing. The short answer for “is a TI-84 calculator allowed on the ACT” is **yes, most models in the TI-84 Plus family are permitted**. However, the ACT has strict rules about features and modifications to ensure fairness. This guide breaks down everything you need to know before test day.

The Official ACT Calculator Policy Explained

The ACT allows any 4-function, scientific, or graphing calculator, as long as it is not on the prohibited list and is not modified in a forbidden way. The policy is designed to prevent unfair advantages, such as the use of calculators with Computer Algebra Systems (CAS) that can solve algebraic equations automatically. Calculators are only allowed during the mathematics section of the test.

Primary Prohibited Features

• Calculators with Computer Algebra Systems (CAS): This is the most common reason for a calculator to be banned. Models like the TI-89, TI-92, and TI-Nspire CAS are prohibited because they can perform symbolic manipulation.
• QWERTY Keyboards: Any device with a letter-by-letter keyboard is not allowed.
• Communication Devices: Calculators with Wi-Fi, Bluetooth, or other wireless communication capabilities are forbidden.
• Cell Phones & Computers: Using a calculator app on a cell phone, tablet, or laptop is strictly prohibited.

Which TI-84 Calculators Are Allowed on the ACT?

The Texas Instruments TI-84 Plus family is one of the most popular choices for students taking the ACT, and for good reason. They are powerful, familiar, and almost all are permitted.

Status of Common TI-84 Models for the ACT

Calculator Model	ACT Status	Key Considerations
TI-84 Plus	Allowed	Standard, widely accepted graphing calculator.
TI-84 Plus CE / Python Edition	Allowed	Newer, color screen models are permitted.
TI-84 Plus C Silver Edition	Allowed	This color-screen predecessor to the CE is also fine.
TI-83 Plus	Allowed	An older but still fully permitted model.
TI-Nspire (non-CAS)	Allowed	The non-CAS version is explicitly permitted.
TI-89 / TI-92 / TI-Nspire CAS	NOT Allowed	These have a Computer Algebra System (CAS).

How to Use This ACT Calculator Checker

Our tool simplifies the process of checking your calculator’s compliance.

1. Select Your Model: Choose your calculator from the dropdown. If you have a TI-89, TI-92, or another model explicitly listed as having CAS, select “Other”.
2. Check for Prohibited Features: The main prohibited feature on TI calculators is a CAS. Confirm if your model has this. Standard TI-84 Plus models do not have CAS.
3. Review Modifications: Ensure your calculator doesn’t have paper tape or make noise. If it has an old infrared port, cover it with opaque tape.
4. See Your Result: The tool will instantly provide a status: “Allowed” or “Not Allowed,” along with an explanation based on the official ACT rules.

Key Factors That Affect Your Calculator’s ACT Eligibility

Understanding these factors will help you avoid any issues on test day.

• Presence of CAS: This is the number one rule. A Computer Algebra System allows a calculator to solve ‘x’ in ‘2x + 5 = 15’, which is a banned advantage. The TI-84 Plus series does not have this; the TI-89 does.
• Programs and Documents: While the TI-84 can store programs, those with CAS functionality are not allowed. Proctors may ask you to clear your calculator’s memory, so back up anything important.
• Physical Modifications: Adding paper tape printers, making the device make noise, or leaving communication ports exposed are all grounds for disqualification.
• Power Cords: You cannot have your calculator plugged into an electrical outlet during the test. Ensure your batteries are fresh or fully charged.
• Sharing is Prohibited: You may not share your calculator with another student during the test.
• Test Administrator Discretion: Ultimately, the testing staff has the final say. They are responsible for ensuring all rules are followed and can dismiss any student found using a prohibited device.

Frequently Asked Questions (FAQ)

Is the TI-84 Plus CE allowed on the ACT?

Yes, the TI-84 Plus CE is explicitly allowed on the ACT. It is one of the most recommended calculators for the test.

What about the TI-84 Plus CE Python edition?

Yes, the Python programming version is also allowed. The programming capability does not count as a CAS.

Do I need to clear the memory on my TI-84 before the test?

It is highly recommended. Proctors have the right to check your calculator for prohibited programs and may require you to reset the device. It’s better to do it beforehand.

Is a TI-89 calculator allowed on the ACT?

No, the TI-89 is explicitly prohibited because it contains a Computer Algebra System (CAS).

What happens if I bring a banned calculator?

The testing staff will not allow you to use it. You would have to take the math test without a calculator. In some cases, you could be dismissed from the test.

Is a calculator required for the ACT Math test?

No, a calculator is not required. Every question on the ACT Math test can be solved without a calculator. However, using a familiar, permitted calculator is highly recommended for efficiency.

Can I use my calculator on the ACT Science section?

No, calculators are not permitted on any section of the ACT other than the mathematics test.

Where can I find the official, most up-to-date ACT calculator policy?

You should always refer to the official ACT website (act.org) for the definitive policy document before your test date. Policies can change, so checking the source is the best practice.