Answer:

erasing

AnswerCrossword Clue
ERASINGDeleting
ERASINGWiping clean
ERASINGBlackboard user's activity, at times
ERASINGClearing the tape
ERASINGFrequent schoolroom activity
ERASINGScraping off.
ERASINGBlackboard cleaning.
ERASINGBlotting out.
ERASINGClearing the blackboard.
ERASINGCleaning the blackboard.
ERASINGObliterating.
ERASINGWhat mistakes need.
ERASINGWiping off.
ERASINGBlackboard chore.
ERASINGRemoving.
ERASINGRubbing out.
ERASINGSchoolroom chore.
ERASINGCleaning the blackboard
ERASINGGetting rid of
ERASINGActivity at a board
ERASINGActivity of most puzzle constructors
ERASINGGoing back to the start
ERASINGCausing to disappear
ERASINGGetting off the tape
ERASINGWriting's opposite
ERASINGEffacing
ERASINGWiping the slate clean
ERASINGBoard monitor's task
ERASINGClassroom chore
ERASINGThe start of something new?
ERASINGTaking out, in a way
ERASINGProof of fallibility
ERASINGBlackboard chore