Can I cut off student access to assigned work on the due date and/or give due date extensions to individual students?
I teach physics remotely for a community college which uses OER's for textbooks and homework. I've found Khan Academy a great tool to build student's online homework. Students are enjoying it and learning from the great videos and resources.
However, I've discovered that though I set due dates for what I assign it appears students can go back in, redo exercises and improve scores after the due dates.
Is there a way to cut off their access to the assigned work on the due date?
If not, it appears I must go in and download grades immediately after due dates. Then, if students make improvements I can later download the new grades and deduct a percentage from higher/improved grades (so people who completed work later aren't given equal credit as those who mastered and completed material earlier) to replace the older, lower grades.
Also, is there a way to give individual students due date extensions on their assigned work? I have not found many options in setting due dates. This would be very helpful for students who message me with family emergencies, sickness, etc and need more time on a particular assignment.
I am very thankful for Khan Academy offering all of these great resources for free... just could use clarity moving forward to utilize the resources here best.
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