fx991EX
The New Classroom Standard
With Highresolution LCD Technology
ClassWiz has intuitive operability and high performance functions, so ideal for education.
Features
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 textbookbased displays make operation easier for teaching the use of scientific calculators, so you can concentrate on teaching mathematics.
ClassWiz Series
ES PLUS Series
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
MS Series
Example
Solve the simultaneous equations.
{ x + 2y = 3 2x +3y = 4The solution is
x = 1
y = 2
ClassWiz Series
Icon display
Select equation
Input coefficient
Solution
MS Series
Icon display
Select equation
Input coefficient
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.
Example: Student's height data comparison chart
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: a_{1}=2 and a_{n+1} 2a_{n}3 (n=1, 2, 3 ...)
a_{1}2, a_{2}=1, a_{3}=1, a_{4}=5, a_{5}=13
Riemann Integral
Calculation using advanced Riemann functions is also possible.
The spreadsheet function makes it easy to use realworld 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.
Fractions and rational numbers
Equation
Matrix
Integration
Example
Solve the matrix calculation.
ClassWiz Series
Able to enter Matrix just as textbook form
Able to have the answer in 1 display as textbook form
MS series
Need 4 displays to enter numbers in Matrix A
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
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 groupwork lessons.
Group A
Input data
QR Code

Graph
Group B
Input data
QR Code

Graph
Group discussion
Combine and compare graphs on a single screen.

Combine Group A, Group B
3Quick user manual callup
 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.Wearresistant printing
2,000cycle 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.Dropresistant 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.
Teacher's Voice
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 fx991EX (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.