*lightbulb_outline *This question type can be used in a digital test only.

The mathematical equation question is used if participants are required to answer a question by using an equation. Grading of this question can be done manually or automatically by making use of the equation solver. If you use the equation solver, Ans will calculate the answer of the participant to check if the correct answer has been given.

To create a mathematical equation question, follow the steps below.

- Click the
*domain***School name**in the menu on the left. - Click on
*label_important***Courses**in the menu at the top. - Click on your course or use the search bar in the
*Courses*-section. - Click on your assignment or create a new assignment.
- Click
**New exercise**, fill in a name and click**Save**. - Click
**New question**and select**Mathematical equation**. - Formulate the question in the question box.
- Fill in the number of points the question is worth.
- Click the dropdown menu
**Equation solver***and select**Review manually**or**Use equation solver**. If you use the review manually option, you will have the possibility to add criteria with points to the grading scheme. If you use the equation solver, continue with the next step. - If the equation solver is selected, click the
**Pencil-icon**and write the equation. Click the dropdown menu**Equation operation**and choose the operation. Examples of each operation are shown below. - Click
**Calculate solution**to check whether the correct equation has been inserted**.**The solution which is expected from the participants will appear. If this is not the answer you would have expected, an incorrect equation has been entered in the previous step. - Click the
*more_vert***-icon**for more options. - Click
**Save.**

### Equation operations

Ans provides different equation operations which you can use to automatically grade the answer of the participant. For each operation, an example is provided below.

- \(3+3x = 9\)
- \(3x = 6\)
- \(x = 2\)

As the equation is solved for \(x\), this is inserted in the 'Variable' field.

- \(10(10-1)\)
- \(10(9)\)
- \(90\)

The participants need to calculate the integral of a certain function f with respect to a variable x on an interval [a,b]. In the example below, the participants need to solve \(\int 2xdx\). The correct answer is \(x^2\).

- \(\lim {x \to 2} x^2\)
- If \(x=2\), \(x^2 = 2^2\)
- \(2^2 = 4\)

### Question and review options

Just like other question types, the mathematical equation has specific question and review options. When selecting the review method 'review manually', a grading scheme can be added.

**Bonus**This marks the question as a bonus question, which means the number of points awarded with this question will be counted until the maximum amount of points achievable for this assignment is reached. The points of the bonus question aren’t included in the maximum amount of points that can be achieved for the assignment If the participant answers the question incorrectly, this won’t be detracted from the number of points and the mark.**Skippable**You will first need to assign which participants are exempted from answering this question within the settings of your course. You can then enable which questions can be skipped by these participants. In a digital test, the participant will be informed they can skip the question. The number of points for this question will not be counted in their result. It is not possible to change this setting after the test has been taken.**Partial scoring**Participants will receive points when their answer is partly correct. For example, if the total number of points they can receive for a question is 2 and their answer is 50% correct, they will still receive 1 point. Without this option, they can only receive 0 or the maximum number of points.

To add a grading scheme to a mathematical equation question, follow the steps below.

- Click
**Grading scheme**in the menu at the top. - Go to the question for which you want to set the grading scheme.
- Click the
*more_horiz***-icon**and click**Edit**. - The only option is to add grading criteria. Sliders and rubrics are not available for this question type. To add a criterion, click on the plus (+) symbol. Add the number of points and the text of the criteria.
- Click the
*more_vert***-icon**for more grading options. - Click
**Save**.

**Start with zero points**

If this option is enabled the marking of this question will always start at zero points and the points will be added up when selecting the criteria. When this option is disabled, the marking will start with the maximum amount of points that can be awarded for this question and selecting the criteria will be subtracted from this maximum. This means that the criteria should be added as minus points to the total amount. The reviewer can then select the criteria if the participant didn’t meet the criteria with their answer. The points for that criteria will be detracted from the total amount of points.**Limit minimum to zero points**

With this option enabled, it’s not possible to go below zero points when selecting the different criteria. It is still possible to manually adjust the number of points to go below zero with the adjustment option during reviewing.**Limit maximum to total points**

In the grading settings it’s possible to set the maximum amount of points achievable with the question, separate from the points per criteria When this number deviates from the maximum amount achievable by adding up the criteria points, this option will cap the maximum amount of points to this manually set number.

*error_outline* As a teacher, you don't have to insert the correct answer if you use the equation solver, as it is calculated automatically with the operation chosen. The participant will have an infinite amount of attempts for this type of question.

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