Teach grammar explicitly. Introduce the grammar objective, state the rule for proper usage and provide several examples to demonstrate a concept. This technique will help students who are just beginning formal grammar instruction. Require students to write rules in a notebook or on index cards for frequent review.
Utilize cooperative learning. After you introduce a grammar concept, like the parts of speech, group three or four students and ask them to work together to find examples. Students can peruse old newspapers or magazines, cut out sentences and highlight the nouns, verbs and adjectives.
Use supplemental material to reinforce the textbook. The deductive method of teaching grammar is teacher-centered, but does not have to be exclusively linked to the textbook. Copy some passages of a short story, display them on the overhead projector and teach subject-verb agreement or pronoun usage by reading the passage and idenifying these elements. Seeing grammar applied to a real-life text will help students see its relevance.