One thing i could share to help improve and have an effective study skills is to write down what you need to do. In this way it helps your brain to understand that what you wrote is the goal for the day. It will remind you not to procrastinate because it will remind you of what is needed to be done. It is fairly important to have an efficient study skills so that we can adapt and learn knowledge sufficiently.
It depends on your learning type (kinetic, visual, auditory, etc.) however most evidence proves that A.) quizzing yourself would be the best answer
The sixth grade lexile is 665L to 1000L hope this helps
