Exam Reader vs Uncertainty Calculator

Grade multiple choice tests, quizzes, and assessment papers by using your iPhone or iPad's camera as a grading scanner. It can also read over-written marks. %100 success rate if used as described. Supports from 5 to 200 questions and 2 to 7 choices. Both horizontal and vertical sheets can be used (it is a first in this kind of application). Teachers and students can create their own sheets with our generator (also a first). Right to left sheets (Arabic) support (again a first). Now with griddable questions support also. Commercial users can publish exams that can be graded by the students themselves to see their ranks among the participants that took the same exam. "Awesome! The recognition rate of this app is much better than any other camera-based OMR apps. I recommend this app for parents or tutors who teach their children or students at home. Two thumbs up!!!" --breakhan "The best app alternative to ZipGrade or Quick Key" Please watch the tutorial videos for learning the basic usage of the mobile and cloud parts from our website. You can decrease the size of the answer sheet to use less paper. If you have trouble scanning the paper, you can send the last picture taken to us from the upload menu. We will analysis the paper and return to you ASAP (only app that gives this kind of support). Great for assessments or regular quizzes. Giving teachers and students the flexibility to grade papers instantly anywhere. We're working hard to improve the product and need feedback from you. Write bulent@bebyaz.com with any feedback or suggestions. You can also use the build-in chat system for both online and offline messaging. Supported languages: Dutch, English, French, German, Greek, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Thai, Turkish.

Uncertainty Calculator evaluates the error propagation throughout the mathematical expressions comprised of variables of uncertain value. The application allows input of up to three value-error pairs (A, B and C), that can be used as a parameters in the final expression. Error values should be provided in absolute (100 +/- 5) or in relative format, the latter should appear in percent format (100 +/- 5%). The evaluated expression can include numerous functions, that provided by row of the appropriate buttons. Components and functions can be added directly to the expression field by pressing the corresponding buttons. To encompass expression into the preset formula, select the expression and press the corresponding formula button. Particular attention should be paid to placing brackets to avoid equation ambiguity. The application deals with independent, random errors. So if this is a case never use A + A, but rather 2*A and never A*A*A but rather A^3! Obviously, different parameters can be combined in any way (A+B or C *A^2 .. is perfectly fine). Angles for trigonometric functions can be provided in degrees or radians, and that should be reflected by setting a yellow button to "DEG" or "RAD". Bear in mind the importance of units in any of calculations! Implementation Examples: 1.The charge passing through an electrical circuit is defined by: Q = I * t, where I is the current and t is the time. Calculate the total charge value when a current of 0.15 ± 0.01 A passes through the circuit for 120 ± 1 s: Input: A = 0.15 ± 0.01, B = 120 ± 1 The final expression will be A*B, and press Calculate: The final value will be: 18 ± 1.2 Thus, it can be reported the total charge as 18 C ± 1 C. Important! One should only report as many significant figures as are consistent with estimated error! So the value should be rounded to the rightmost decimal place at which error applies. 2. A ball is tossed straight up into the air with initial speed vo = (4.0± 0.2) m/s. After a time t = (0.60 ± 10%) s, the height of the ball is h = vo*t - 0.5gt^2 = 0.636 m (g = 9.80 m/s^2). What is the value and uncertainty of height? Input: A = vo = 4.0 ± 0.2, and B = t = 0.60 ± 10%, then the final expression should be: A*B – 0.5*9.8*B^2 The final value will be: 0.6 ± 0.4 (meters).