a person or object actively performing an action clear indication of the goal or purpose of the task recognizable tools and materials related to the task visible signs of progress towards the goal distinct physical or mental effort being exerted identifiable stages of the task being completed
task which is a person or object actively performing an action task which has clear indication of the goal or purpose of the task task which has recognizable tools and materials related to the task task which has visible signs of progress towards the goal task which has distinct physical or mental effort being exerted task which has identifiable stages of the task being completed