R A D E AT I C F e a t u re s The GradeMatic 4000 grading calculator, dubbed by teachers world wide as “the ultimate teacher’s ai d e , ” p rovides the fol- lowing feature s : P e rmanently stores teacher’s custom...
Grade Display Form a t s G PAs 4, 5, 12 Scaled % True % P o i n t s Max # of Grades per Student Max # of Students per Class 4 – GradeMatic 4000 133 x 70 x 6.5mm ™...
Note: If the timer/stopwatch is running, the automatic shutdown is disabled. Display Your GradeMatic 4000 has a 10–digit internal accuracy and uses a standard 5/4 rounding technique for an accurate 8–digit display. UNDAMENTALS...
Battery Information GradeMatic 4000 is powered by a sin- gle 3-Volt Lithium CR-2032 battery. If the display becomes weak or erratic, replace the battery.
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Last Math Entry Prev. Math Entries Last Grade Entry Prev. Grade Entries Maximum/Minimum Pts Class Average ‘Auto’ Weights Grade Display Format Custom Grade Scale Preference Settings Table 1 • • • • • • • • • • • • •...
S t o p w a t c h / Ti m e r GradeMatic 4000 includes a full function stopwatch/timer with buzzer feature. Able to count up from zero or down from an e n t e red time, the count is displayed in an h o u r, minute, second format.
Basic Math GradeMatic 4000 uses standard chaining logic for calculations. This means that when solving a problem, it solves in the order entered. Keystrokes 3 [+] 2 [=] 3 [–] 2 [=] 3 [x] 2 [=] 3 [÷] 2 [=]...
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Press [=] to display answer. Keystrokes [Set] [%] 15 [=] 100 [Set] [%] 25 [=] Square Root Calculates the square root of a given number. Keystrokes [144] [Set] [+] [100] [Set] [+] 10 – GradeMatic 4000 — ™ Display –75. Display...
Cumulative Memory The GradeMatic 4000 has a cumulative Memory function that allows you to store a value for future use. When a value is stored in memory, it does not change until revised or the calculator is reset. Values can be stored in any for- mat.
G PA Scale Values GradeMatic 4000 i n t e rnally calculates let- ter and number grades based on these scales for GPAs 4.0, 5.0, and 12.0 G PA 4.0 4 . 3 3 4 . 0 0 3 . 6 7 A –...
“None” will display to indicate that a grade value is re q u i red before a value can be calculated, or the grade selected is not available due to pre f e r- ence settings. 1 4 – GradeMatic 4000™...
I m p o rtant! All exercises in this section use default values unless otherwise stated. P ress [Set] [x] to re s t o re GradeMatic 4000 to its default settings. Default Grading Scale The following examples use the default grading scale shown below.
100. Minimum Points Minimum points can either be set d i rectly, or the GradeMatic 4000 can do this automatically. When set automati- cally, GradeMatic 4000 multiplies the maximum points by the D– bre a k p o i n t p e rcentage (default is 60%).
Entering Maximum Points The following exercise shows how to change the maximum points and let the calculator figure the minimum points. You will also convert the following s c o res to percent and letter grades using a maximum points setting of 50.
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N o t e : With the new maximum and mini - mum points, the passing grade is lower than with the default minimum points. 1 8 – GradeMatic 4000 1 3 0 1 8 6 . 6 6 B + 2 62.00 D+...
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Resetting Maximum and Minimum Points to Defaults S t e p / K e y s t ro k e s 1 . R e t u rn the maximum and minimum points to their defaults: [ O ff] [On/C] 2 .
Customizing GradeMatic 4000 With the GradeMatic 4000, you may customize your calculator to suit your special needs by: 1) Selecting the grade display format 2) Entering a custom grade scale. Preferences Before you begin grading, you may customize your calculator via the Preference function.
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Settings & Defaults N o t e : The default option for each setting is identified with an asterisk ( S c a l e O p t i o n s : Defined below ( True Percent) is the actual mathe- matical relationship between the maxi- mum and actual points entered and the grade scale in use.
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Note: The GradeMatic 4000 also pro v i d e s k e y s t roke shortcuts to changing the grading f o rmat. Refer to S h o rtcuts to Setting Grade F o rmat for additional inform a t i o n .
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N o t e : The default for each setting is identi - fied with an asterisk ( Set A–F O p t i o n s : Set ALL To set break points for whole grades only, leave this setting at b reak points for N o t e : Setting the A e rences to O...
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If set to O , a beep sounds with each key p re s s . 2 4 – GradeMatic 4000 , an A + grade can be entere d . , A + cannot be entered or dis- A–F N o t e.
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O S t e p / K e y s t ro k e s 1 . Clear calculator: [On/C] [On/C] 2 . Set All + and All – p re f e rences to O ff : [Set] [÷]...
C o n v e rting Scores & Grades GradeMatic 4000 is most commonly used for converting scores to letter grades. This is done using either the [ Av g ] [# Grd ] C o n v e rt Raw Scores to Letter Grades...
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187 [Av g ] 155 [Av g ] 164 [Av g ] [Set] [Av g ] Do Not Clear the Calculator 1 8 7 1 5 5 1 6 4 1 9 3 . 5 0 A 1 77.50 1 82.00 B –...
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Grade Form a t s The following shows the diff e rent dis- play formats of the GradeMatic 4000. The GradeMatic 4000 can be used to easily convert between form a t s . K e y s t rokes...
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Student #1 Student #2 Student #3 S t e p / K e y s t ro k e s 1 . Clear calculator: [On/C] [On/C] 2 . Enter 200 maximum points: 200 [Max Pts] 3 . Enter the students’ grades:...
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4 . Enter the grades: 376 [+] 165 [+] 545 [=] 5 . Find the average: [ Av g ] 3 0 – GradeMatic 4000 3 7 6 1 6 5 5 4 5 ™ D i s p l a y 1 5 0 0 .
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Po i n t s - O ff/Negative Score Grading You can also use the calculator for neg- ative or “points-off” grading. Press the [ – ] key, enter the number of points off , then press [ Av g ]. The following exer- cise assumes a standard 100–point...
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2 . Enter the per–page points–off : [–] 10 [–] 5 [–] 6 [=] 3 . Find the student’s average: [ Av g ] 3 2 – GradeMatic 4000 – 5 – 6 ™ D i s p l a y – 1 0 –...
[# Grd ] k e y . Averaging Letter Grades Enter and average the following grades: S t e p / K e y s t ro k e s 1 . Clear calculator: [On/C] [On/C] 2 . Enter the grades: [ B + ] [ C –...
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[ B + ] 64 [# Grd ] [ C – ] 3 . Find the average for grades: [ Av g ] 3 4 – GradeMatic 4000 C – ™ D i s p l a y 1 87.00 B + 2 88.33 B +...
Grade Weighting GradeMatic 4000 p rovides a grade weighting feature that can be used to weigh a grade more heavily than oth- ers. For example, the following table shows that homework and quizzes account for 50% of a student’s average,...
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Otherwise the grade will not re c e i v e the correct weight factor. N o t e : To clear the weight table, turn the cal - culator off by pressing the [ O ff ] k e y. 3 6 – GradeMatic 4000 ™...
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#1 (Homework) #2 (Quizzes) #3 (Mid-term ) S t e p / K e y s t ro k e s 1 . Clear calculator: [On/C] [On/C] 2 . Enter the weighted grades: [ B + ] [C–] 2 [Wt] [A–] 7 [Wt]...
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5 . Enter the third grade and wt. factor: [A–] 7 [Wt] 6 . Find the average for grades: [ Av g ] 3 8 – GradeMatic 4000 G r a d e A – 1 88.33 B+ 2 93.00 A–...
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#1 (Homework) #2 (Quizzes) #3 (Mid-term ) S t e p / K e y s t ro k e s 1 . Clear calculator: [On/C] [On/C] 2 . Select the weight table: [Set] [Wt] 3 . Enter the weight factors:...
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N o t e : Weights 4–10 are valued at 1.00 because no change was made. 4 . Clear display and exit the weight t a b l e : [On/C] [On/C] 4 0 – GradeMatic 4000 ™ D i s p l a y 1 1.00 2 2.00...
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#1 (Homework) #2 (Quizzes) #3 (Mid-term ) S t e p / K e y s t ro k e s 1 . Clear calculator: [On/C] [On/C] 2 . Enter the grades: [ B + ] [ C – ] [ A –...
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3 . Find the average: [ Av g ] 4 . Clear and exit the weight table: [ O ff] [On/C] 4 2 – GradeMatic 4000 1 88.33 B + 2 7 1 . 6 7 C – ™ G r a d e C –...
Custom Grade Scales Wi t h t h e GradeMatic 4000 you can e n t e r, recall and store your own custom grade scale. Grade scales are usually set for whole-grade (A/B/C/D/F) bre a k points with (B+/B/B–) automatically divided even- ly within the whole-grade range.
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4 . Set the minimum points for “C”: 75 [Set] C 5 . Set the minimum points for “D”: 65 [Set] D 4 4 – GradeMatic 4000 Sample Scale B = 85.0 – 93.0 D = 65.0 – 75.0 ™...
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To view the points range for a letter grade press the g r a d e . S t e p / K e y s t ro k e s 1 . Clear calculator: [On/C] [On/C] 2 . Enter 100 maximum points: 100 [Max Pts] 3 .
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N o t e : To review the minimum points for grades, follow the same steps but use the [Min Pts] key instead of the [Max Pts] k e y. 4 6 – GradeMatic 4000 ™ D i s p l a y 5 0 0 .
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Plus/Minus Custom Scale The following exercise shows how to enter a “nonlinear” custom grade scale with all grade-break levels (including plus and minus). For a “linear” grade point scale, the b reak point spread is equal as shown in the following table. Note that the point spread for each grade is 2.5.
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[Rcl] [A+] [Rcl] [A] [Rcl] [A–] [Rcl] [B+] Continue until done . . . 4 8 – GradeMatic 4000 A – F p re f e rence to 98.0–100. 95.5– 98.0 9 4 . 0 – 9 5 . 5 91.0–94.0...
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U S T O M P l u s P l u s R A D E W h o l e W h o l e C A L E M i n u s M i n u s U s e r ’s Guide –...
Power Off: Turns power off and clears all non–permanent memory. Set: Used with other keys to access secondary functions. • – Math Digits: Enters numbers. Math Operators: Used to perform mathematical calculations. ™ 50 – GradeMatic 4000...
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All Clear: Also referred to as a Full Reset. Clears all memory and resets to factory defaults. Recall: Recalls stored values and set- tings. Percent Key: Four-functions. Used in percent calculations. Delta Percent: Calculates the percent difference between two numbers. –...
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Maximum and Minimum Points . Min Pts Minimum Points: Used when chang- ing or viewing minimum points. If maximum points are changed,you can let the GradeMatic 4000 auto- matically compute the minimum points. For more information on min- Working with imum points refer to Maximum and Minimum Points .
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Average: Finds a student’s grade aver- age, adds it to the overall class aver- age and prepares the calculator for a new grade set entry. Class Avg Class Average: Calculates the class average. To clear a class average, [Set] [Avg] [Avg] press .
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Timer: Displays, starts and stops the timer. If a value is entered prior to starting the timer, the timer counts down from the time entered. +/– – Change Sign: Toggles the sign of the displayed value. 54 – GradeMatic 4000™...
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Square Root: Finds square root of the displayed number. Shortcuts to Setting Grade Format Points GPA 4.0 GPA 5.0 GPA 12.0 Grade Percent True Percent — • User’s Guide – 55...
A R R A N T Y Calculated Industries, Inc. (“CII”) war- rants this product against defects in materials and workmanship for a peri- od of one (1) year from the date of original consumer purchase in the U.S. If a defect exists during the warranty...
CII to obtain current product re p a i r i n f o rmation and charges, including f reight and duties. 6 0 – GradeMatic 4000 E PA I R E RV I C E — O U T S I D E T H E ™...
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I S C L A I M E R M A K E S N O WA R R A N T Y O R R E P R E S E N TAT I O N E I T H E R E X P R E S S O R I M P L I E D ’...
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. If you have one, or if you have any suggestions for improvements to this p roduct or its User’s Guide, please call or write our Product Development Department. Thank you. 6 2 – GradeMatic 4000 ™...
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How To Reach CII Headquarters MAY-6 97 Mail Calculated Industries, Inc. 4840 Hytech Drive Carson City, NV 89706 USA Phone 775/885–4975 775/885–4949 Email techsup@calculated.com World Wide Web http://www.calculated.com User’s Guide – 63...
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