At a Glance
| Criteria | Casio fx-991EX ClassWiz | Texas Instruments TI-36X Pro | Winner |
|---|---|---|---|
| Price | $15-$20 | $30-$40 | A |
| Ease of Use | Very intuitive, simple layout | Slightly steeper learning curve | B |
| Features | Basic scientific functions, graphing capabilities | Advanced functions, statistics, multiple modes | Tie |
| Durability | High durability, rugged design | Very durable, metal case | A |
| Display | High-resolution LCD with natural textbook display | Clear, multi-line LCD display | B |
| Battery Life | Long-lasting battery, solar + battery power | Long battery life, dual power options | A |
| Size & Portability | Compact and lightweight | Slightly larger, portable | A |
| Warranty | 1-year limited warranty | 2-year warranty | B |

Texas Instruments TI-30XIIS Scientific Calculator, Black with Blue Accents (30XIIS/TBL/1L1/BK)
Robust, professional grade scientific calculator. Logs and antilogs
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Texas Instruments TI-30XIIS Scientific Calculator

The TI-30XIIS is a versatile, professional-grade scientific calculator that stands out for its dual-line display, allowing students to see their entries and results simultaneously. It supports a wide range of scientific and statistical functions, making it suitable for most middle school and high school math and science courses. Compared with the TI-30XIIS Raspberry, it offers a slightly more robust design, though both are functionally similar. The main tradeoff is its basic design, lacking advanced features like graphing or programming, which are unnecessary for most students but limit its use in higher-level STEM fields.

Texas Instruments TI-30XIIS Scientific Calculator
- ✔ Display: 2-line
- ✔ Power: Solar and battery
- ✔ Modes: Degrees, radians, grads, scientific, engineering

Texas Instruments TI-30XIIS Scientific Calculator, Raspberry
- ✔ Display: 2-line
- ✔ Power: Solar and battery
- ✔ Modes: Degrees, Radians, Grads

Texas Instruments TI-30XS MultiView Scientific Calculator
- ✔ Display: 16 x 4 characters, four-line
- ✔ Power Source: Solar and battery
- ✔ Features: MathPrint, fraction/decimal toggle, step-by-step simplification, x, y tables
Pros:
- Dual-line display enhances user experience by showing entry and results simultaneously
- Supports complex scientific and statistical calculations
- Dual power source ensures reliability during exams and study sessions
Cons:
- Limited to scientific and basic calculations, no graphing capabilities
- Design is somewhat basic, lacking advanced features or programmability
- No backlit display for low-light environments
Best for: Students who need a reliable, straightforward scientific calculator for everyday math and science coursework.
Not ideal for: Students requiring graphing or advanced programming features for more complex STEM projects.
Bottom line: An excellent choice for students needing dependable scientific functions without the complexity of graphing calculators.
“An excellent choice for students needing dependable scientific functions without the complexity of graphing calculators.”

Texas Instruments TI-30XIIS Scientific Calculator, Raspberry Small
Robust, professional grade scientific calculator. Logs and antilogs
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Texas Instruments TI-30XIIS Scientific Calculator, Raspberry

The TI-30XIIS Raspberry offers the same core features as the standard TI-30XIIS but comes in a fun raspberry color, making it appealing for students seeking a more personalized device. It supports multiple angle modes and scientific functions, making it suitable for middle and high school STEM courses. Compared to the MultiView, it has a smaller display with only two lines, which may be less effective for complex calculations. While it supports essential scientific functions, it does not include advanced features like fraction step-by-step or extensive statistical analysis.
Pros:
- Dual-line display for easy viewing of entries and results
- Supports multiple angle modes and scientific functions
- Colorful design adds personality and fun to studying
Cons:
- Limited to basic scientific calculations, no advanced features
- No graphing or programming capabilities
- Design is basic and may feel less durable
Best for: Students on a budget who need a reliable scientific calculator for basic coursework.
Not ideal for: Students preparing for advanced math or science courses requiring larger displays or more features.
Bottom line: A budget-friendly, functional calculator perfect for middle school students or those new to scientific calculations.
“A budget-friendly, functional calculator perfect for middle school students or those new to scientific calculations.”

Texas Instruments TI-30XS MultiView Scientific Calculator
Designed with unique features to allow you to enter more than one Calculation, compare results and explore patterns,...
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Texas Instruments TI-30XS MultiView Scientific Calculator

The TI-30XS MultiView is designed for high school students tackling more complex STEM subjects. Its four-line display allows for easier comparison of multiple calculations, while the MathPrint mode displays formulas and calculations in standard math notation, reducing errors. It supports functions like x, y tables, pattern analysis, and step-by-step fraction simplification, making it a versatile choice for algebra, geometry, chemistry, and physics. Compared with the basic models, it offers a more expansive interface, but the smaller display size might be limiting for very complex functions or advanced graphing needs.
Pros:
- Large four-line display makes viewing multiple calculations straightforward
- MathPrint mode displays calculations in standard notation
- Supports multiple calculations, tables, and pattern analysis
Cons:
- Display size may be limiting for very complex functions
- Higher price point compared to basic models
- No graphing capabilities for visual data analysis
Best for: High school students who need a more capable scientific calculator with larger display and advanced features.
Not ideal for: Elementary or middle school students who only need basic scientific functions.
Bottom line: Ideal for high school STEM students seeking a balance between advanced functionality and ease of use without the complexity of graphing calculators.
“Ideal for high school STEM students seeking a balance between advanced functionality and ease of use without the complexity of graphing calculators.”
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Key Differences
Choosing between these calculators depends on the student’s academic level and specific needs. The Casio fx-991EX excels for everyday high school use, thanks to its affordability, ease of operation, and natural textbook display. It covers all basic scientific calculations effectively. In contrast, the TI-36X Pro caters to students engaged in advanced mathematics or physics, offering features like matrix calculations, multiple modes, and enhanced durability. The extra cost and complexity are justified only if the coursework demands these capabilities.Detailed Comparison
Price (Casio fx-991EX ClassWiz wins — major)
The cost difference is significant. The fx-991EX is budget-friendly, ideal for students who want reliable performance without extra features. The TI-36X Pro’s higher price reflects its advanced functionalities, better suited for students in specialized courses or higher education.Ease of Use (Casio fx-991EX ClassWiz wins — moderate)
The simple interface of the fx-991EX makes it accessible for beginners, whereas the TI-36X Pro’s richer interface could pose a learning curve. For quick, everyday calculations, fx-991EX’s simplicity is advantageous; for complex tasks, TI-36X Pro’s versatility is better.Features (Texas Instruments TI-36X Pro wins — major)
Advanced features like matrix operations, multiple calculation modes, and statistical functions are exclusive to the TI-36X Pro. These features are essential for higher-level courses but overkill for basic science and math classes.Durability (Texas Instruments TI-36X Pro wins — moderate)
The TI-36X Pro’s metal case provides slightly better protection, making it more durable for frequent use. The fx-991EX’s plastic case still offers good durability but may be more prone to damage over time.Display (Casio fx-991EX ClassWiz wins — minor)
The fx-991EX’s natural textbook display simplifies understanding calculations, which benefits most students. The TI-36X Pro’s multi-line display is more suited for complex calculations but less straightforward for basic use.Battery Life (Casio fx-991EX ClassWiz wins — minor)
Both calculators have long-lasting batteries, with the TI-36X Pro’s dual power options offering slight advantages. Solar power in the fx-991EX reduces dependency on batteries.Size & Portability (Casio fx-991EX ClassWiz wins — minor)
The fx-991EX’s compact size makes it easier to carry for students on the go. The TI-36X Pro is larger but still portable enough for most school bags.Warranty (Texas Instruments TI-36X Pro wins — minor)
The longer warranty period of the TI-36X Pro offers additional peace of mind, especially given its higher investment. The fx-991EX’s warranty is standard for budget calculators.Casio fx-991EX ClassWiz: Pros and Cons
Pros:
- Affordable price suitable for most students
- Simple, intuitive interface
- Natural textbook display enhances readability
- Long battery life with solar support
- Compact and lightweight for portability
Cons:
- Limited advanced features
- Less suitable for higher-level coursework
- Basic durability compared to metal cases
Texas Instruments TI-36X Pro: Pros and Cons
Pros:
- More advanced features for complex calculations
- Durable metal case offers better protection
- Longer warranty period
- Multi-line display aids in complex calculations
Cons:
- Higher price point
- Steeper learning curve
- Larger and slightly heavier
Who Should Choose What
Choose Casio fx-991EX ClassWiz if:
- You need a reliable scientific calculator for high school science and math classes
- Budget-conscious and prefer an easy-to-use device
- Mostly perform basic calculations and occasional graphing
Choose Texas Instruments TI-36X Pro if:
- You are enrolled in advanced coursework like calculus, physics, or engineering
- You require features like matrix calculations, multiple modes, or statistical functions
- Durability and longer warranty are priorities