At the start of each new science unit, I have my students hunt for the "key" words that they find on the new topic in a variety of texts. They browse the text features across all of the print material. As they browse the text, they record the words they find and tally up how many times they see them across the materials they worked with in the session. They really enjoy doing this and
learn so much about content vocabulary and how important it is to pay close attention to it.