Final answer:
A 3-2-1 organizer is most useful during pre-reading as it helps activate prior knowledge and set a purpose for reading.
Step-by-step explanation:
A 3-2-1 organizer is most useful during pre-reading. This organizer helps students activate their prior knowledge and set a purpose for reading. It consists of three sections: 3 things you already know about the topic, 2 things you want to learn, and 1 question you have. By completing this organizer before reading, students can make predictions and develop curiosity, which enhances their engagement with the text.
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