Observe and describe the daily pattern of sunrise and sunset, and predict that the pattern will repeat.
Every single day, the Sun appears to rise up in the sky in the morning and set down in the evening. This has happened every day of your life, and it is a pattern you can predict with confidence.
Scientists call something that repeats over and over a pattern. Once you notice a pattern, you can use it to predict what will happen next, even without seeing it happen yet.
Mastery looks like: They describe the daily sunrise and sunset pattern and confidently predict it will repeat tomorrow, because it is a pattern.
Common stumbles: Thinking each day's sunrise is a surprise rather than a reliable pattern; confusing what causes daylight with simply observing when it happens.