I have some students who lack motivation. If they don't start the lesson then the grade which currently is a null never changes from the null to a 0 or whatever they get.
The lesson consists of 9 pages with no branching. Students have to go straight through and answer questions of a series of web pages on phishing. The questions are short answer- one or two word fill in the blank.
Any help on changing the null to a 0 would be appreciated.