Configured semantic drilldown
February 11, 2012. Semantic Drilldown has been configured. When you click on Explore Activities, you will now be taken to a page where you can find activities using any parameter. Need to find Astronomy activities for 5th graders and you want the activities to be active? Click on 3rd-5th grade, then astronomy, and finally click on active. You will be shown only those activities which fall under all those parameters.