Effective Study Techniques Guide

Explains and provides actionable advice on various science-backed study methods to improve learning and retention.
Prompt
I'm a college student preparing for final exams in [Specify Subject, e.g., Biology]. Explain three powerful, science-backed study techniques: 1) Active Recall, 2) Spaced Repetition, and 3) The Feynman Technique. For each method, provide a clear, step-by-step guide on how I can apply it specifically to my Biology material to improve my understanding and long-term retention.