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 Is Unit Expression With Exact Quantity check. There are two sections in this article:
When to use the Is Unit Expression With Exact Quantity check?
How does the Is Unit Expression With Exact Quantity check work?
When to use the Is Unit Expression With Exact Quantity check?
This checks allows you to check if a given left-hand side (usually the answer given by a student) describes a given quantity in the same form. On the right-hand side you can provide either a:
full unit expression such as
2 Nonly a quantity such as
newton
If the exact form of the quantity is not important you can use the Is Unit Expression With Equivalent Quantity check.
How does the Is Unit Expression With Exact Quantity check work?
As a first step the check will extract the quantities from both sides. It will then continue to compare the quantities directly if possible or use the Exact Form check on the quantity expression given.
Questions or Feedback
Do you want to know more about this check, whether you should use it for your exercise or any of the other checks? Please let us know via the chat icon in the right bottom of the screen!