A group of second-grade teachers is meeting for a professional learning community (PLC) around phonemic awareness instruction. The group decides to incorporate phonemic awareness into Tier 1 instruction to assist with the students' reading. Which of the following skills is most appropriate for the second-grade teachers to include in their instruction?

Syllable counting involves identifying and counting the syllables in words, which, while important, primarily focuses on the larger units of sound rather than the individual phonemes. This skill does not directly enhance students' abilities to manipulate sounds, which is essential for effective reading instruction at this level.

Phoneme segmentation, which requires students to break down words into their individual sounds, is indeed a valuable phonemic awareness skill. However, substitution is more advanced and directly aids in the application of phonemic awareness in reading, making it a more suitable focus for instruction at this stage.

Onset and rime focuses on the initial consonant sounds (onsets) and the vowel and following sounds (rimes) within syllables. While this skill does support phonological awareness, it does not specifically target the manipulation of individual phonemes, which is essential for developing reading fluency and decoding skills.