A great way for students to practice saying sounds when they see letter combinations is to write the letters at the same time they are saying the sound. These worksheets, aligned to the Once scope and sequence, make that easy. This is also a great place to have them practice writing and saying the non-phonetic words that they will study in Cycles 99 through 200.
Want a refresher on the sounds students should be saying for each letter combination? Just check out https://www.tryonce.com/phonemes.