This may be difficult to include into teaching but it can be done! Throwing simple clues in every now and then for students to dissect. It is possible too focus on one for a few months, and to move on in the next few. A laminated paper including the clues can be like a reference sheet for the students. A constant practice and referencing back to words may be helpful. The older the grade, the easier to incorporate it the idea considering the amount of information. It will be easiest to spread it out over time.