This should not be a new skill and should be a review for most of the class. Be aware of those children who do not get it and be ready to work with them in a small group . Not to many. This can be an assessment to see if they do really understand the concept. This could be graded.
Whole group Have all children in a circle on the rug at front of the room.
Introduce the book Shoeshine Girl and let them look at the cover of the book and predict what the book will be about and speculate on why the authr used this title record these predictions. Read the blurb on the back and spend about 2-3 minutes discussing what might happen in the book. Record their predictions on paper to keep up to check as you read during the week and allow room for them to add ideas and make changes in their predictions and make new predictions. Model, model, model and talk, talk, talk. Go back to the predictions and add and delete and work with these orally.