A couple of days ago I posted a context clues worksheet on the adjective abstract. For high school students, especially the college bound, this is a key concept and word.
To take it further, here is a lesson plan on concrete and abstract nouns. To begin this lesson, you might want to use (that is, if you don’t incorporate the aforementioned context clues worksheet on abstract, which I should probably do myself), you might find this Everyday Edit worksheet on The Empire State useful. This scaffolded worksheet on using concrete and abstract nouns is the mainstay of the lesson; this teacher’s copy of the worksheet will make the lesson a bit easier to deliver.
If you find typos in these documents, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.