Grasple has multiple check methods using the Computer Algebra System (CAS) which can be used within the editor to indicate when the answer of a student should be marked correct/incorrect. A full list of current options can be found in this article.
This article covers the Defines a Quantity check. There are two sections in this article:
When to use the Defines a Quantity check?
How does the Defines a Quantity check work?
When to use the Defines a Quantity check?
This check makes it possible to check if a given right-hand side expression (normally the answer given by the student) contains a quantity. This means that 1 kg, 1 g, and 1 kilonewton will all pass this test, while 1+1, or 1 do not.
How does the Defines a Quantity check work?
This check tries to extract the quantity part of a given unit expressions. If this part cannot be found the check will fail, otherwise it will succeed.
Questions of Feedback
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