Quick tip for anyone who teaches, or works with kids in any capacity: Choices.
If you want the kid to do reading and math during a tutoring session, you don't tell said kid the plan. Instead, you offer it as a choice - do you want to do reading first and math last or the other way around? Do you want to do reading today and writing tomorrow or start with writing?
Simple, but all of a sudden you're not giving orders, you're letting them choose. Most of the time, they forget that they didn't want to do reading or math and get excited that they get to pick. It might work with adults too.