These bookmarks are created by you students. Anytime you assign a new novel reading you can have them decide on the vocabulary. They use the new novel to identify unfamiliar words. The write the word, the page number, and brief definition.
This is a great assignment to give after a quiz or test. It keeps kids learning yet quiet so others can continue to work on their quiz/test.
This would also work with a pre-made vocabulary list. Students find the word in the book and define it using context clues.