Take organized research notes in original wording, not copied, grouped by subtopic, with the source tracked for each note.
Good notes are written in YOUR OWN words, paraphrased, not copied straight from the source. Copying word-for-word without quotation marks is a serious problem called plagiarism, even by accident.
Organize notes by subtopic, such as index cards or sections in a document labeled "Why They Migrate," "The Journey Route," and "Dangers Along the Way," and write the source next to every note so you can find it again later.
Mastery looks like: They take organized, subtopic-labeled notes in their own words, with a source tracked for every note, avoiding word-for-word copying.
Common stumbles: Copying phrases too closely to the original source; forgetting to label which source a note came from.