Form a focused, genuine research question and gather brief evidence from two or three sources to answer it.
This unit is a short research cycle from question to presentation, and it starts with a genuinely good question -- one you actually want the answer to, specific enough to research in a few sources, and not answerable with just "yes" or "no." "How do earthquakes happen?" works; "Are earthquakes bad?" does not.
Once you have your question, a mini-research project only needs two or three focused sources -- you are looking for a clear, well-supported answer, not an exhaustive report like the ancient-civilization unit.
Mastery looks like: They write a specific, genuinely curious research question that cannot be answered with a single word, and identify two or three sources to research it.
Common stumbles: Choosing a question answerable with "yes," "no," or one word instead of one requiring real explanation.