Before reading The Lorax, ask students to pay attention to any words they hear that they do not recognize. When they hear unfamiliar words, they should raise their hands or give the thumbs-up signal. You can decide if you want to stop each time and record the word or just write them down after you finish reading.
Explain to students that Dr. Seuss is famous for making up silly words in his books, and this book has some made-up words. Tell students that you will record these words and practice using context clues to figure out their meanings.