How do I restrict the number of student submissions for MATLAB Grader coding problems?​

How do I restrict the number of student submissions for MATLAB Grader coding problems?​

Answer 1

[MathWorks Support Team]

When students work their problems on the MATLAB Grader site, it is possible to limit the number of submissions for all problems within an assignment. To change this setting, navigate to the desired assignment in grader.mathworks.com and click "edit".

Under "Number of Submissions" choose "Unlimited" or "Limited". If "Limited" is selected, the additional field "submissions per problem" appears. Enter the number of submissions to allow.

When MATLAB Grader problems are integrated into an LMS, limiting the number of submissions is controlled by the LMS platform. Check with your LMS administrator to determine if this feature is available for your LMS.

[Cris LaPierre]

It is now possible to use custom parameters to limit the number of submissions allowed when MATLAB Grader is integrated into an LMS. How custom parameters are accessed and applied varies by platform.

Add the parameter custom_attempts_allowed and assign it an integer number of attempts. For example

custom_attempts_allowed=3

Note that in some platforms "custom_" is added automatically. In these situations, do not include it in the parameter name. You would instead enter

attempts_allowed=3

[Cris LaPierre]

Here are some platform-specific examples

Blackboard: attempts_allowed=3

Canvas: custom_attempts_allowed=3

Brightspace D2L:

• Name field: attempts_allowed
• Value field: 3

Moodle: attempts_allowed=3

Open edX: [ "attempts_allowed=3" ]

Sakai: attempts_allowed=3

The limit is displayed in the Submit button when viewing the problem using a student role.

Note: The preview or "View as student" mode in some LMS platforms as well as the Learner Preview feature in Grader do not change the user role to student.

[Cris LaPierre]

An additional note - on some platforms, custom parameters can be set at the problem level (i.e. by the instructor), with the custom parameter applying to just that problem. In others, they can only be set at the tool integration level by the LMS admin, with the custom parameters applying to every problem associated with that LTI tool integration.