Hi Jennifer
In response to your questions
- Not sure what you mean by matrix - course grades can have formulas to calculate grades . Each activity can also be given different weightings
- Manually overriding the grades can also be done if a suitable formula can't be created
For the last two items - it is possible to create an Open Badge rather than a certificate. These can be awarded on various criteria and are externally displayable and verifiable.
the information the badge can display include
- criteria the badge is awarded for
- who awarded this
- when this was awarded
- when it expires
We have badges enabled on this site - if you check your profile you may see you have a badge already!
Regards