Are Ti 84 Calculators Allowed On The Act

Determine if your calculator, including any TI-84 model, is allowed on the ACT test.

Is Your Calculator Allowed?

What does “are ti 84 calculators allowed on the act” mean?

This question is crucial for any student preparing for the ACT. The ACT has a specific calculator policy designed to ensure fairness and prevent any test-taker from having an unfair advantage. While most calculators, including the popular TI-84 Plus series, are permitted, some are explicitly banned. Understanding whether your specific device is allowed is a key part of test preparation. This policy primarily focuses on prohibiting calculators with advanced functionalities that could solve complex algebra problems on their own.

ACT Calculator Policy Explained

The core of the ACT’s calculator rule is to ban devices that have a Computer Algebra System (CAS). A CAS can perform symbolic manipulation, like solving for variables in an equation, which goes beyond the scope of what is supposed to be tested. Additionally, other features are prohibited to maintain a secure and fair testing environment. Here is a breakdown of the rules:

ACT Calculator Prohibited vs. Allowed Features

Feature Type	Rule & Explanation	Status
Computer Algebra System (CAS)	Calculators with CAS are strictly prohibited. These systems can solve algebraic equations symbolically. Models like the TI-89, TI-92, and TI-Nspire CAS are banned.	PROHIBITED
Graphing Capability (Non-CAS)	Graphing calculators without CAS are generally allowed. This includes the entire TI-84 Plus family.	ALLOWED
QWERTY Keypad	Any device with a typewriter-style (QWERTY) keyboard is not allowed.	PROHIBITED
Power Cords	Calculators that need to be plugged into an electrical outlet are not permitted in the testing room.	PROHIBITED
Infrared Data Ports	Calculators with infrared ports must have the port covered with opaque tape (like duct tape). This applies to older HP models.	MODIFICATION REQUIRED
Programs & Documents	You must remove any programs or documents from your calculator. Test proctors may check to ensure no unauthorized programs are stored.	MODIFICATION REQUIRED

Practical Examples

Example 1: The Prepared Student

Inputs: A student brings a Texas Instruments TI-84 Plus CE to the test center. They have checked to make sure no unapproved programs are on the device.

Result: This calculator is Allowed. The TI-84 Plus CE does not have a CAS and is one of the most common calculators used for the ACT. The student can proceed with the test.

Example 2: The Prohibited Calculator

Inputs: A student brings a Texas Instruments TI-89 Titanium, which they used for a college-level calculus class.

Result: This calculator is Prohibited. The TI-89 series has a built-in CAS, which is explicitly banned by the ACT policy. The student will not be allowed to use this calculator and may be dismissed if found using it.

How to Use This ACT Calculator Policy Checker

1. Find Your Calculator Model: Look at the face of your calculator to find its model name and number (e.g., TI-84 Plus, Casio fx-9750GII).
2. Select the Model: Use the dropdown menu at the top of this page and choose the option that best matches your calculator.
3. Review the Result: The tool will instantly show you a color-coded result:
   • Green (Allowed): Your calculator is permitted for use on the ACT.
   • Red (Prohibited): Your calculator is NOT allowed. You must bring a different one.
   • Yellow (Warning/Modification): Your calculator may be allowed, but only if specific conditions are met (e.g., it’s the non-CAS version, or you cover a port).

Key Factors That Affect if a TI-84 or Other Calculator is Allowed on the ACT

• Presence of a CAS: This is the single biggest factor. If the model name includes “CAS” or it’s known to have one (like the TI-89), it’s banned.
• QWERTY Keyboard: Devices that look like a computer keyboard are not allowed.
• Internet/Communication Capability: No calculator that can communicate wirelessly is permitted.
• Power Source: It must be battery-powered. Calculators with power cords are prohibited.
• Stored Programs: Even on an approved calculator like the TI-84 Plus, you must remove any programs that provide CAS functionality or contain notes. It’s best practice to clear the memory before the test. For help, you might check out a guide on ACT Math section tips.
• Noise: Any calculator that makes noise must be muted for the test.

Frequently Asked Questions (FAQ)

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

Yes, the TI-84 Plus CE is explicitly allowed on the ACT as it does not contain a Computer Algebra System (CAS).

2. What is a Computer Algebra System (CAS) and why is it banned?

A CAS is a sophisticated program that can manipulate mathematical expressions symbolically. For example, it can solve for ‘x’ in ‘5x – 10 = 5’ or simplify complex expressions. It’s banned because the ACT is designed to test your ability to do this, not your calculator’s.

3. What happens if I bring a prohibited calculator to the test?

If a proctor identifies the prohibited calculator before the test, you will not be allowed to use it. If you are found using one during the test, you may be dismissed, and your test score will be voided.

4. Can I use my smartphone’s calculator?

No. All smart devices, including phones, tablets, and smartwatches, are strictly prohibited.

5. Is the TI-Nspire allowed?

This is a tricky one. The standard TI-Nspire CX and CX II (non-CAS versions) are allowed. However, the TI-Nspire CX CAS and CX II CAS models are prohibited. You must check the name on the calculator’s face carefully.

6. Do I need to clear the memory on my TI-84?

Yes, it is highly recommended. The ACT policy forbids calculators with stored programs that have CAS functionality. To be safe, you should clear all user-loaded programs and data before test day. A discussion on this can be found in a SAT vs ACT policy analysis.

7. Does the ACT provide a calculator?

No, you must bring your own calculator. For the digital version of the ACT, an on-screen calculator (Desmos) is available, but you can still bring your own handheld one. Learn more about our ACT tutoring services for digital test strategies.

8. Are all scientific calculators allowed?

Most standard scientific calculators (like the TI-36X Pro) are allowed because they do not have CAS or other prohibited features. As long as it is not on the prohibited list, it should be fine.