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Expert Mode for the Assessment of Formula Comparison Questions

Last modified by Anna Paul-Hasenfuss on 28.08.2024

Icon_Formelvergleich.png  To assess questions of the formula comparison type, you can find extended options such as individual MAXIMA instructions in the expert mode. The entered MAXIMA instruction can return a Boolean value (true/false) or a numerical value (score). This is comparable to the assessment options "All correct answers" or "Points per answer" of other question forms. Even placeholders (LEARNERRESPONSE, CORRECTRESPONSE, MAXSCORE ...) can be used in the MAXIMA instruction.

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Here are some examples of application scenarios:

General information about the expert mode can be found at Task assessment in the Expert Mode.

Content

Further Information

Sample Resources

Beispiele Expertenmodus Formelvergleichsaufgaben.zip

Success

All examples are taken from the Netzwerk Mathematik/Physik + E-Learning. This network of Saxon universities of applied sciences and universities provide a framework for cooperation and exchange between interested parties, including a joint OPAL workspace, a joint ONYX task pool and regular project meetings.

Example - Derivation

The expert mode allows you to change the MAXIMA comparison operation. The following example shows how to specify a root function for a given function.

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The solution to this problem is not clear. Possible answers include the following:

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Due to an adjustment in the Expert Mode, the comparison is no longer made between the correct answer and the entered learner answer, but between their derivatives:

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Each root function is therefore accepted as the correct solution:

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Example - User input simplifications

Learner solutions are considered correct, even if they have not been simplified.

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If you only want completely simplified values to receive the maximum score, you can add simp:false; in the Expert Mode.

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Example - Awarding sub-points

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If there are typical errors for which learners should still receive sub-points, you can display this in the expert mode in a gap as follows:

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Example - Answers in several gaps

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If partial answers are requested in different gaps of a formula comparison question whose input order is irrelevant, you can check them as in this example:

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Should three gaps be involved, the comparison is made with:

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Warning

**Important**

The true/false comparison only works if MAXIMA returns exactly one Boolean value.

A numerical value, i.e. the score which is limited by the given minimum and maximum number of points, can be returned if the option Points is used.