 lesson in Moodle 2.9. There have been some bug fixes and improvements to the lesson activity. Amongst these are support for groups, overrides for individuals and groups, some new events for the lesson and a new completion condition require time spent. Let's look in more detail at a few of these. Here's the lesson setup page and if we scroll down and expand the common module settings we see that we can choose separate or visible groups and add group grouping access restrictions. If we expand activity completion and then select show activities complete when conditions are met it's now possible to require students to spend a minimum amount of time in the lesson for it to be marked complete which is here 30 minutes but it could be weeks, days, hours or seconds. If we save and create the lesson we can then explore it from the student point of view and see what happens if they don't meet the minimum required time. When the student reaches the end of the lesson she's told it's finished but she can see that the time is not the minimum time and she'd have to do the lesson again. So now's a good opportunity to explore overrides. These allow you to give extensions or retakes to specific students or groups and we can access this from the lesson administration group or user overrides and then clicking the button. So if we select our student Barbara we can then allow her as an individual to retake the lesson and when we've saved that we can see a list of any overrides which have been set. So now if our student retakes the lesson and spends the minimum amount of time in it the activity will be registered as complete.