Giving your students more independence in their learning process in the classroom can be done with the method brain-book-neighbour-boss.
Do I know the answer myself?
Can I find the answer online or on paper?
Can a classmate help me?
Does the teacher know more?
This method does not work by itself: do not expect a student who has never worked this way before to be able to apply it just like that. As with many things, practice makes perfect.