To add a level of difficulty. I would add number cube to see how many letters to cover up at a time. Use tally marks, dots, numerals ect Free "find the letter" alphabet worksheets! Get them for uppercase, lowercase, and both!
During circle time, children can sing along, as the teacher reads the book in an rhythm or singful way. Children will be more engaged in learning and singing along. Which results in improving children's language, communication, literacy and social skills.