Keeping students motivated during the summer months starts in the proceeding school year. As students are exposed to a broadening of subjects, each student will naturally like one or two. The motivation comes when a teacher or parent recognizes the interest and then turns the student toward further investigation / discovery. The student will experience the joy of learning, which once experienced will motivate the student to learn more. Facilitating that desire will keep the student on track year round.
The best way to learn and study for tests is to use technology. Websites like StudyIsland give you a chance to run through subject matter sample questions, at 10 or 15 or 20 at a time. Studies show that repeated scores averaging say 80%, result in a most probable 70% on the actual quiz, test, exam taken. The good news is you can practice online until you have command of the topic. As your average goes up so does your probable quiz, test, exam score go up. The bad news is that it costs to use Websites like StudyIsland. As a tutor I have my own access which I will let you use while I am tutoring you.