## Summary

The following steps describe in short how to do this.

1. Create a new exercise with type "Equation".
2. Set the check type of the exercise by clicking the gear icon left of the answer box and selecting the type "Parallel Vector (beta)".
3. Give a vector (either column or row) as the correct answer, using the matrix form.
4. Go to preview mode and test different answers.
5. (Optional) add more detailed feedback/explanation to the exercise.

## Note: beta functionality

This functionality is in beta. We're very interested to hear your experiences with it.
If it does not function as you would expect it to, you miss certain options, or you just really wished it work differently, please contact us using the chat icon on the bottom right hand corner of the page.
We value your feedback as we are here to help you create great interactive exercises for linear algebra.

## Steps

#### Step 1: create a new exercise with type "Equation"

See an example below: #### Step 2: set the check-type to "Parallel Vector (beta)"

Click on the gear icon next to the answer box and select the check-type "Parallel Vector (beta)". #### Step 3: give a correct vector to check answers with

Give a vector as the correct answer in the answer box. This vector will be used to check whether the vectors given by learners are also correct by checking whether they are parallel.
To create a vector, use the matrix form and select the dimensions of your vector. Given the following example of a correct vector: This vector will be accepted as a correct answer, too: #### Step 4: test different correct and incorrect answers

For our sample exercise a correct answer is the vector given by the creator or any vector which is the original vector multiplied by a non-zero scalar. or: And an incorrect answer for our sample exercise is any vector which is not parallel to the vector given by the creator. #### Step 5: add more detailed feedback

Automatic feedback will be shown to student about whether they have the answer correct or incorrect including a correct answer.
However more detailed explanation on when answers are correct help the learners in learning from both their correct as incorrect answers. Add these explanations in the green "Worked Example" box and orange "Question at wrong answer" box.