Modeling (the teacher shows the student how).
Supported practice (teacher and student do it together; the student gets help as needed)
Mastery (the student does it independently or takes a test on it).
Modeling can be done beautifully in the classroom. Testing can be done efficiently in the classroom. Supported practice is harder, so teachers often need to send homework to cover that step. If your student’s homework is getting both of you down, a tutor can provide the support that takes the pain out, and puts the joy of learning back in.