Casio 991ex
Casio ClassWiz FX-991EX Scientific Calculator - Icon Menu Display, Textbook Display, Slide-on Hard Case, Spreadsheet, Natural-VPAM - Solar, Battery Powered - 3' x 6.5' x 0.4' - 1 Each Item # 151154. Emulator for scientific calculators. Download the emulator software and manuals you require for the fx-991EX, fx-85GTX and fx-83GTX. Please note that these emulators are only available for Windows. Casio FX-991EX Original Scientific Calculator Classwiz 552 function Spreadsheet. $24.99 previous price $24.99. Casio Scientific Calculator Fx-991N. $4.99 + $2.89 shipping. Casio Authentic FX-991Es PLUS Scientific Calculator 417 functions New in box. A PDF reader is required to view PDF files. If you don't have one, click on the banner to download one.
The New Classroom Standard
With High-resolution LCD Technology
ClassWiz has intuitive operability and high performance functions, so ideal for education.
Function
Introduces high-performance functions effective for advanced mathematics
1 Easy and Intuitive operability
Intuitive and interactive operation makes it easy to use the features of ClassWiz.
By the use of icons, selection of the desired function is quick and easy.
Visual, interactive and textbook-based displays make operation easier for teaching the use of scientific calculators, so you can concentrate on teaching mathematics.
Interactive format
Interactive menu display realizes more intuitive operation.
Natural Textbook Display Models
Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbols just as they appear in textbooks.
ClassWiz Series
Example
Solve the simultaneous equations.
{x + 2y = 32x +3y = 4The solution is
x = -1
y = 2
ClassWiz Series
Select equation
Solution
MS Series
Select equation
Solution
2 Essential functions for learning all in one
A wide range of essential functions are effective for education and available to support student's learning.
Spreadsheet
Useful for learning statistics.
Up to 5 columns x 45 rows
(maximum of 170 data items)
1Essential functions
Even advanced mathematical calculations are simple to perform and functions that take advantage of previous unavailable display capabilities are now possible.
Spreadsheet calculations
Statistics
The spreadsheet function can be used for studying statistics which has become important in mathematics classes.
Statistical calculation such as the mean of the data is executed
Recursion
In addition, the spreadsheet function makes it possible to enter recursive formulas.
Sequence: a1=2 and an+1 -2an-3 (n=1, 2, 3 ...)
a1-2, a2=1, a3=-1, a4=-5, a5=-13
Riemann Integral
Calculation using advanced Riemann functions is also possible.
Casio Fx 991ex Functions
The spreadsheet function makes it easy to use real-world data even in the classroom, enabling students to effectively study statistical processing.
2Variety of functions available to support student's learning.
From basic level to advanced math level for secondary and tertiary education.
Equation
Integration
Example
Solve the matrix calculation.
Casio Fx 991ex Classwiz
ClassWiz Series
Able to have the answer in 1 display as textbook form
MS series
Need 4 displays to enter numbers in Matrix B
Need 4 displays to check the final answer
3 Simple and quick calculations
Simple key strokes and visualized formulas make calculations faster.
Fast calculation for smooth performance in class or during examinations.
Example
Calculate the mean height of 5 students.
< Students’ height >
176cm, 180cm, 173cm, 180cm, 175cm
Casio 991ex Price
ClassWiz series 2 steps
Fewer keystrokes and faster !!
Standard variation, variance, mean, sum all in one display!
No more jotting down each solution on paper, ClassWiz will save your time.
ES PLUS Series 6 steps
ES PLUS Series 6 steps
ES PLUS Series 6 steps
4 Extensive and advanced service using QR Code
Generate QR Codes of equations input into the calculator by a simple operation.
Graphs and other information can be displayed on smartphone or tablet screens.
Advanced mathematical capabilities make teaching mathematics more extensive and advanced.
1Visualization with graphs
- STEP 1
- Input formula
- STEP 2
- Table
- STEP 3
- QR Code
- STEP 4
- Display Graph
Makes formulas visually understandable
2Online Sharing
Online sharing system assists active learning in your classroom.
If you use the QR Code Function, you can share students' results.
It will be a great help for group-work lessons.
Group B
QR Code
Graph
Group discussion
Combine and compare graphs on a single screen.
Combine Group A, Group B
3Quick user manual call-up
- STEP 1
- Display the menu
- STEP 2
- QR Code
- STEP 3
- Display the manual
Makes learning to operate the calculator fast and easy
Please see the website in detail
- QR code portal site
- http://wes.casio.com
5 Quality Authentic quality
Excellent quality and authentication ensure confidence and peace of mind for use in educational settings
1Tough & Sustainable
CASIO has established three criteria to ensure excellent quality in the ClassWiz series.
1.Wear-resistant printing
2,000-cycle wear testing
Since ClassWiz calculators are products used for many years as learning tools, the keys are made of a material that offers high durability and resistance to print peeling.
2.Drop-resistant body
Drop testing from a height of 75 cm
The high product quality prevents malfunction or breakage when a calculator is dropped.
3.Environmentally friendly
Compliant with RoHS environmental regulations
The materials used in ClassWiz series calculators comply with European RoHS environmental regulations, an international standard.
*Complies with DEHP, BBP, DBP, and DIBP
These three quality features ensure that CASIO ClassWiz series calculators are educational tools that effectively support learning.
2Authenticity Check
Two methods enable authenticity checking before and after purchase.
Furthermore, Premium Content is available to registered users of genuine ClassWiz series calculators.
6 Premium content
A variety of original CASIO content is available to make learning mathematics fun.
Users can access this content by registering after the authentication check.
School
Math and Science Division Chair at Lyons Township High School
LaGrange Illinois (USA)
Name
Ismael Zamora
Comment
I love the simplicity of the Casio fx-991EX (ClassWiz). The use of a natural textbook display and high resolution screen allows me to present mathematics the way students see mathematics in their textbooks. The ClassWiz also allows me to teach concepts I never could before. Statistics, data analysis, probability and spreadsheets are all now within the realm of possibility. My favorite feature is the QR Code generator. I now have the power of a graphing calculator in the hands of every student. The ClassWiz allows me to focus on the learning and not the button pushing.
Solving equations is possible with the equation solver in the fx-991ES PLUS or fx-991EX calculator’s shift-solve
functionality. Once the equation has been entered, the calculator uses the Newton-Raphson numerical method to solve the equation. Because the equation solver uses a numerical method, it only works with equations with a single variable, but can find multiple values.
For example, I will solve the following equation for x:
- Enter the left expression using X. An X is inserted for variable that you wish to solve.
- Use = accessible through ALPHACALC. This inserts an equals sign.
- Enter the right expression.
- shift-solve to enter equation solve by pressing SHIFTCALC.
Solve for X
will be shown on screen. - If applicable, enter a number as the starting point. This Casio calculator uses Newton-Raphson numerical method solving for x. The current value of X is displayed for reference and will be used if no new value is provided.
- Press = to solve the equation. The calculator may take a few seconds.
The first value of x as found by the numerical method will be provided on the screen and is saved to the X variable. The difference between the left expression and the right expression is shown as the solution to L–R.
Caveats: As mentioned, this only works with equations with one variable. The variable can be used multiple times, as shown in this example, however you can’t use two or more variables such as x and y. If you wish to use more than one variable, you need to use the quadratic equation solve.
Casio 991ex Calculator
Furthermore, the Newton-Raphson numerical method only returns one value. To find another value, change the start point at step 4. For example, if there are two solutions, one positive and one negative, and you find the positive one, enter a negative number for the start point to find the negative answer.
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