ACT Calculator Rules at a Glance
The ACT allows certain graphing calculators, and the TI-84 (in approved models and firmware) is generally permitted. Key restrictions include no QWERTY keyboards, no wireless/蓝牙 capabilities active during testing, and no Computer Algebra Systems (CAS) that can symbolic-solve or simplify. The calculator must be on the current approved list, and you are responsible for any needed functionality. Bring a fresh battery and backup if permitted.
Official ACT Calculator Policy
The ACT publishes an up-to-date list of approved calculators. Policies emphasize functional integrity and no-sharing during testing. Cell phone calculators, smartwatches, and devices with wireless communication are prohibited. If your TI-84 relies on an app or has recent OS updates that enable CAS features, confirm it matches the ACT’s allowed specifications. Use only devices you have practiced with to avoid surprises on test day.
Which TI-84 Models Are ACT-Approved
TI-84 Plus models remain widely accepted, but always verify against the official list before testing. Some newer variants have features that may be restricted depending on firmware. Below is a concise reference comparing common models and their typical status and notes.
| Model / Attribute | Verified Detail | Notes / Source Type |
|---|---|---|
| TI-84 Plus CE (with USB-C) | Generally approved if no active CAS/symbolic solving | Check firmware; avoid QWERTY layouts |
| TI-84 Plus C Silver Edition | Approved in most cases; confirm current list | Color screen; earlier models accepted |
| TI-84 Plus Silver Edition | Approved when not using prohibited features | Older but still allowed if on list |
| TI-84 Plus T Interview-Capable | May face stricter proctoring; verification advised | School/district device; confirm settings |
| Any TI-84 with jailbreak/third-party OS | Likely prohibited; use only official firmware | Custom firmware may violate rules |
Key Restrictions on Test Day
Even an approved TI-84 can be problematic if settings or accessories violate rules. Wireless features must be disabled; Bluetooth, Wi-Fi, and cell capabilities should be off. Do not use stylus or camera features. Calculators with QWERTY physical or on-screen layouts are disallowed. All notes, apps, or programs must be removed. Bring required cables and batteries; sharing devices is not permitted.
Prepare and Verify Before Test Day
Confirm your specific model and firmware by checking the ACT’s latest approved calculator list. Update or roll back firmware only if it keeps the calculator compliant. Practice with the exact device you plan to use to build comfort with keystrokes and functions. Keep documentation or packaging in case proctors request verification. Establish a test-day checklist for batteries, backups, and allowed accessories.
Quick Comparison: Common TI-84 Setups
- TI-84 Plus CE (standard firmware, no CAS): Generally accepted
- TI-84 Plus CE with CAS enabled: Not permitted
- TI-84 Plus Silver Edition (original OS): Usually accepted
- TI-84 Plus with jailbreak or custom OS: Not permitted
- TI-84 connected to phone or using Airplane mode off: Not permitted
Final Checklist for Test Day
Arrive with a fully charged or fresh battery, a backup if allowed, and the exact calculator you practiced with. Confirm no connectivity features are active and that prohibited input methods are absent. Review the official ACT list the week before testing and again the night before. When in doubt, contact ACT support or your test center for clarification rather than assuming an allowance.