示范答案：
What stands out most is the hands-on experiments we did in biology class. For example, we grew bean seeds in different conditions (light vs. dark, wet vs. dry) to observe how environment affects growth—recording their height every few days and drawing conclusions. I also remember the chemistry lab sessions: mixing safe chemicals to see color changes or small reactions, and always having to wear goggles (which felt a bit fun and formal). Those practical activities made science more memorable than just textbook theories.
