SU744712A1 - Pupil examining device - Google Patents

Description

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: The invention relates to the field of automation and computer technology and can be used for the automated monitoring and evaluation of students' knowledge.

A device for controlling students' knowledge is known, in which, in order to increase the accuracy of knowledge assessment, they take into account the complexity of the questions, characterize it with weight. However, when weighing the questions, it is not possible to achieve a high level. objectivity, since weights are assigned during the development of control programs, subjectively assessing the complexity of the issues. This inevitably reduces the accuracy of the assessment of students' knowledge.

In order to eliminate this drawback, weights are assigned to questions using the results of the knowledge control during the operation of the monitoring device.

The closest technical solution to the present invention is a device containing student consoles, a console switch which is used to perform sequential polling of consoles, counters of correct answers and number of students, a unit for estimating and determining the weight of questions, an adder and a unit for C2l.

The first drawback of the device in question is that the weight of the questions in it depends on the results of the answers.

10 learning groups for other questions. This leads | P1IT to the fact that the assessment of students' knowledge will be different in the case of testing its knowledge in different groups.

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The second disadvantage is the small amount of information, on the basis of which the weight of the question is determined. This information. qi is limited to test results

20 knowledge of students from one group on one ticket.

Due to the considered disadvantages, the weight of this issue may differ significantly for different groups of students.

A third drawback of the device is the need to use the same tickets for all students of the same j group.

These drawbacks reduce the accuracy of the assessment of students' knowledge and significantly limit the ability to use the device to control the knowledge of 10 students.

The aim of the invention is to improve the accuracy of knowledge control.

The devil of the question can be interpreted as the probability of an incorrect answer 15 to this question, the accuracy of which increases as the volume of information about the answers of students increases and does not depend on the results of answers to other questions. This allows 20 to eliminate the main disadvantages of the known devices.

This goal is achieved by the fact that a known device containing student consoles is connected to an evaluation unit and a switchboard that is connected directly to the evaluation unit and, through parallel connected counters, of the correctness of answers and the total number of answers, directly and through a series-connected adder and a block for specifying the ballarity are connected to the evaluation unit, a cyclic distribution shaper of the weight of 35 questions is inserted, connected to the block m issues determining the weight and the switch panels.

The drawing shows a block diagram of the proposed device.40

It contains the switchboard 1 of the consoles, the consoles 2 learners, the counter 3 signals for correct answers, the counter 4 for the total number of answers, block 5 for determining the weight of questions, block 6 for estimating, adder 5 for 7, block 8 for specifying the points, and shaper 9 for cyclic distribution of the weight for questions.

Counters 4 and 3 for each question produce a summation of the newly received information from the previously accumulated information, which can be information on all previous answers of students or the results of preliminary weighing of questions of teachers, 55 entered into the corresponding drives in the form of the total number of answers and the number of incorrect answers.

Varying these quantities can change not only the weights of the questions, but also the degree of their change under the influence of the newly received information, i.e. the sensitivity of the device to adjust the weights of the questions.

The shaper of the cyclic distribution of the weights of the questions is intended to indicate, in a convenient way to observe, the ratio of the number of incorrect answers to the total number of answers to each question. Weights distribution information can be used to optimize the entire learning process.

The device for controlling the knowledge of students works as follows.

When the students answer the ticket questions, the consoles 2 accumulate information about the ticket question numbers, the questions that were answered, and the questions that were answered incorrectly. At the end of the allotted time for the students to answer the answers, switch 1 starts the first polling cycle, at which each console 2 is sequentially polled for all ticket issues. This cycle of polling consoles 2 is necessary to determine students' knowledge scores. Information about the ticket issue numbers of this console goes to both counters 3 and 4, sequentially determining the number of answers and incorrect answers for a given question, for which the weight of each question is calculated in block 5 for determining the weight. Information about the weights of the questions is submitted to evaluation unit 6 and adder 7. The resulting sum of weights at the output of adder 7 is the maximum total weight that the student can gain by answering correctly all the questions of the ticket. In block 8, the obtained amount is divided into parts in accordance with the specified score. The received information in the Grade Rating Scale enters evaluation block 6, where it is used in determining the grade. The same block B receives information on questions that are given wrong answers through switch 1, Block 6 evaluates the weights of questions that are answered correctly and comparing the amount received with the rating scale. Based on the comparison results, an assessment of the student’s knowledge is determined and a corresponding remote control is issued. ;

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{a second survey cycle is needed to collect response data to adjust question weights. In this cycle, switch 1 polls all consoles for each question in turn. Information about the number of incorrect answers and the total number of answers to the current question is summed up in counters 3 and 4, respectively, and the results of summing are received in weight determination unit 5, where the value of the question weight is calculated, information about which is received in driver 9, where at the end of the second polling cycle a new distribution of the weights of the questions is formed. As a result of the operation of the device in the counters 3 and 4 and the former 9, information about the weights of the questions will be collected, which contains all the previous results of monitoring It also provides for the formation of an assessment of knowledge, taking into account the generalized measure of the difficulty of answering each question, the objectivity of which increases as the device is used.

The ability to adjust the sensitivity of the device to changes in the weights of the questions depending on the newly received information about the answers of students allows to significantly expand the didactic capabilities of the device, applying it not only to control knowledge, but also to test experimentally control 26

knowledge, a comparative assessment of the degree of assimilation of individual sections of educational material by different groups of students, for automatic weighing of questions, etc.

Claims (2)

1. USSR author's certificate NO 488246, cl. G, 09 B 7/02, 1975. 2. USSR author's certificate number 562848. class. q 09 B 7 / O7, 1975 (prototype). R 1 and R I-j sh one 1 TO L LI "H J g