1. Active recall
Close the book and try to remember what you studied. Write or say the answer before checking. Pulling information from memory strengthens it far more than rereading.
Try it: after each topic, write three questions and answer them the next day without notes.
2. Spaced practice
Spread study over several days instead of cramming in one night. Revisit topics after a day, then a few days, then a week.
Try it: keep a simple revision calendar that shows when each chapter is due for review.
3. Teach it
Explain the topic to a friend, a parent or even an empty room. Gaps in understanding show up immediately.
Put them together
Study a topic, test yourself the next day, explain it to someone at the end of the week. Short, regular sessions using these methods usually beat long, passive ones.
Fit the method to you
Some students prefer flashcards, others diagrams or discussion. Keep the principles and adapt the format to how you learn best.