Note that as this is a modeling assignment, you must submit your response electronically. Some of the items also require written responses, which should also be submitted electronically. If Canvas does not allow you to submit multiple separate files (a text document for your written submissions and two session files from the dynamic geometry software you use) let me know and I will set up an alternate method for electronic submission. But presuming it does, please just submit all three files.
Can't change a rubric once you've started using it.