Student or Learner
Can we use work on as the synonym of study?
How to work on math?
Teacher to parent: "Bob is doing very well in English and Science, but he needs to work on his Math."
or a gymnastics coach might tell his student:
"You've got great strength and can perform stunts like back handsprings and aerials to perfection. But you need to work on your dance moves - remember to point your toes and try to be more fluid in your gestures."