To help you answer the question "What did I do yesterday?", let's break it down into steps. This will guide you in recalling your activities from the previous day.

1. Think about your morning:
   • What time did you wake up?
   • Did you have breakfast? If so, what did you eat?
2. Consider your school day:
   • What classes did you attend?
   • Did you have any homework or assignments to complete?
3. Reflect on your afternoon:
   • Did you participate in any extracurricular activities or sports?
   • Did you meet with friends or family? What did you do together?
4. Think about your evening:
   • Did you have dinner? What did you eat?
   • Did you watch TV, read a book, or play games?
5. Summarize your day:
   • Now that you've recalled different parts of your day, try to put it all together into a summary.
   • For example, you could say: "Yesterday, I woke up at 7 AM, had cereal for breakfast, went to school, attended my math and English classes, played basketball after school, and watched a movie in the evening."

By following these steps, you should be able to clearly recall what you did yesterday and express it in English. Remember to use the past tense when describing your activities!