Research-Based Phonemic Awareness Interventions

In discussions about the science of reading, phonemic awareness is often listed as the first pillar, and there is good reason for this. The other pillars—phonics, fluency, vocabulary, and comprehension—build on this foundational skill. The ability to hear and manipulate sounds in words is critical for decoding and other aspects of literacy. So, when students need additional support in this area, research-based phonemic awareness interventions are essential for ensuring students develop the skills they need to become successful readers. While this article focuses on intervention, many of the strategies, activities, and guidance reflect best practices for phonemic awareness instruction more broadly.

What is phonemic awareness?

Phonemic awareness refers to the ability to hear, identify, and manipulate individual sounds (phonemes) in spoken words. Key phonemic awareness skills include segmenting words into individual sounds, blending sounds to form words, and manipulating sounds through deletion and substitution.

Phonemic awareness is a subskill of phonological awareness, which refers to the broader ability to recognize the sounds of spoken language, including words within sentences, syllables, and rhymes. Phonemic awareness focuses on the smallest units of sound in language. It is an oral and auditory skill that plays a critical role in literacy because it helps students understand that spoken words are made up of individual sounds that can be connected to letters in print.

Research-based components of phonemic awareness interventions 

Research summarized by the National Reading Panel identifies several instructional strategies as effective for phonemic awareness intervention:

• Explicit instruction: Teachers clearly model how to isolate and manipulate sounds in words, guiding students through tasks such as blending and segmenting with direct explanation and feedback.
• Systematic progression: Instruction follows a sequence that moves from simpler skills (such as identifying and blending sounds) to more complex tasks (such as segmenting and manipulating phonemes).
• Brief, focused small-group sessions: Interventions delivered in short sessions with small groups of students allow for frequent practice and immediate feedback.
• Use of manipulatives and gestures: Tools such as sound boxes, counters, or finger tapping help students represent and track individual phonemes.
• Connection to letters and decoding: Making early connections between spoken sounds and letters helps students apply phonemic learning to decoding.

Common misconceptions in teaching phonemic awareness intervention 

Although establishing early connections between phonemic awareness and letters is a key component of effective intervention, a common misconception is that phonemic awareness is the same as phonics. While the two are closely related, the difference between them is important. Phonemic awareness is the ability to hear and manipulate individual sounds in spoken words. Phonics involves connecting those individual sounds to letters. The ability to map sounds to letters is critical for decoding, but conflating phonemic awareness and phonics can lead to overlooking important foundational steps. Before students can successfully connect sounds to letters, they must first hear and work with the individual sounds.

Another misconception about phonemic awareness is that it is just for younger students. While it is true that phonemic awareness is an essential skill to introduce and practice in kindergarten and early grades, older students who have difficulty with decoding often need targeted instruction in identifying and manipulating phonemes. For these students, phonemic awareness intervention can help fill gaps in a skill they were never explicitly taught.

Assessing and monitoring phonemic awareness skills

In addition to classroom observations, universal screeners help identify learners who need phonemic awareness intervention. These assessments are usually brief oral tasks administered one-on-one, though some digital platforms allow phonemic awareness tasks to be completed by a whole class on individual devices. Universal screeners typically focus on the skills at the beginning of the phonemic awareness progression: phoneme isolation, blending, and segmentation. Examples of screening tasks include: 

• Isolation: “What is the first sound in fun?”
• Blending: “What word is /c/ /a/ /t/?”
• Segmentation: “Tell me the sounds in dog.”

Some assessments go further to identify skill gaps for intervention and include more advanced phoneme manipulation tasks, such as deletion and substitution. For example:

• Deletion: “Say smile without /s/.”
• Substitution: “Change the /m/ in mat to /s/.”

For students receiving intervention, progress monitoring should occur about every one to two weeks. Like universal screeners, these assessments are brief and administered one-on-one. They measure growth in specific skills and help determine if intervention should continue or be adjusted.

How to provide intervention for phonemic awareness

Literacy intervention begins with screening data and classroom observations. Once students in need of phonemic awareness intervention have been identified, targeted instruction can be provided in small groups outside the core literacy block. Effective lessons are aligned to the specific skill needs of the group and often follow a gradual release model. This might mean a teacher first modeling the skill by thinking aloud while manipulating sounds, then guiding students through practice with feedback before asking them to try it independently.

Intervention plans for phonemic awareness

The following sample intervention plans show what phonemic awareness support might look like in practice. Younger and older students often have different needs in this area, so we’ll look at an example for each.

Phonemic awareness intervention for elementary students

Elementary students who need support with phonemic awareness often benefit from focused instruction on foundational skills such as phoneme blending, segmenting, and manipulation.

Grades K–2

• Group size: 3–5 students
• Frequency: 4–5 sessions per week
• Time: 5–15 minutes for core instruction; 10–20 minutes for Tier 2/Tier 3 intervention
• Duration: 6–8 weeks, or until mastery is established
• Focus and approach: Explicit instruction in phoneme blending, segmenting, and manipulation to help students learn to combine and work with individual sounds in spoken words. Instruction includes teacher modeling, oral practice, and repeated opportunities to blend and segment phonemes, with early connections to letters and graphemes.
• Instructional setting: Small-group intervention delivered during a block of time outside of core literacy instruction.
• Progress monitoring: Brief phoneme blending and segmentation assessments are administered regularly to measure students’ ability to combine and identify individual sounds and to guide instructional adjustments.

Grades 3–5

• Group size: 3–5 students
• Frequency: 3–5 sessions per week
• Time: 5–10 minutes, typically delivered as a warm-up within a structured literacy intervention block
• Duration: 6–8 weeks, or until mastery is established
• Focus and approach: Targeted instruction in phoneme manipulation tied directly to print, supporting decoding of multisyllabic words and spelling accuracy. Lessons are tightly focused to preserve time for decoding, spelling, and morphology.
• Instructional setting: Small-group intervention delivered within a structured literacy block, not as a standalone lesson.
• Progress monitoring: Brief phoneme manipulation assessments are administered regularly to measure students’ ability to apply sound-level skills to decoding and spelling.

Phonemic awareness intervention for older students

For students in middle and high school, intervention is brief and embedded within broader word-level instruction rather than taught as a standalone skill.

Grades 6–12

• Group size: 3–5 students
• Frequency: 3–5 sessions per week
• Time: 3–5 minutes, embedded within decoding, spelling, or multisyllabic word work
• Duration: As needed; practice is embedded and ongoing within word-level instruction rather than delivered as a fixed-length intervention
• Focus and approach: Explicit instruction in phoneme segmentation and manipulation integrated with decoding and spelling. Students practice breaking words into phonemes and manipulating sounds while connecting those sounds to letters and spelling patterns.
• Instructional setting: Small-group intervention delivered during a dedicated reading intervention block or literacy support period outside of core instruction.
• Progress monitoring: Brief phoneme segmentation assessments are administered regularly to measure students’ ability to identify phonemes in words and apply those skills when decoding and spelling.

Phonemic awareness intervention strategies and activities

Effective instructional strategies for phonemic awareness intervention include explicit modeling of sound manipulation, a systematic progression of skills, targeted small-group instruction, use of gestures and manipulatives to represent sounds, and making connections to letters and decoding. Below are some activities aligned to these strategies: 

• Sound isolation: Students identify a specific sound in a word, such as the first or last. For example, “What is the last sound in map?”
• Phoneme deletion: Students remove a sound from a word to create a new word. For example, “Say plane without /p/.”
• Elkonin sound boxes: Students push tokens into boxes for each sound (not letter) they hear in a word. For example, students place a token in each box for the sounds in ship: /sh/ /i/ /p/.
• Stretch-and-sweep blending: The teacher stretches the individual sounds in a word (e.g., ssssuuun) and then sweeps a finger underneath while blending them together to help students hear the full spoken word.
• Oral word chains: Students practice changing one sound at a time to create new words. For example, cat to bat to bit.

Interventions for phonemic awareness: Closing the gaps

Strong phonemic awareness skills play an important role in reading development. When students can hear and manipulate the individual sounds in spoken words, they are better able to understand how letters represent those sounds in print, which is critical for decoding. While it is important to teach phonemic awareness explicitly as an oral and auditory skill, students benefit from making early, gradual connections to letters to help them begin applying their sound-learning to reading text. This is why interventions for phonemic awareness are essential—they ensure students develop the skills needed for lasting reading success.

The views expressed in this article are those of the author and do not necessarily represent those of HMH.

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