Speech Therapy Vowels

Why Vowels Matter More Than You Think

English has many vowels and diphthongs, yet vowels are often overlooked in speech therapy. That’s not usually due to neglect—most children produce vowels accurately early on, so therapy tends to focus on consonants.

However, vowels deserve attention for two important reasons:

1. Some children do struggle with vowels, particularly children with childhood apraxia of speech or motor planning difficulties.
2. Vowels can be powerful tools for shaping consonants, influencing tongue placement, jaw height, and lip rounding.

Keep reading to learn how vowels can support clearer speech and more efficient articulation therapy.

Why Bother With Vowels in Speech Therapy?

Most children begin babbling vowels in infancy and don’t require direct vowel instruction. So why do vowels matter clinically?

Two Key Reasons:

• Vowel errors do occur, especially in children with motor-based speech disorders.
• Vowels directly influence consonant production, making them valuable facilitators during articulation therapy.

When used intentionally, vowels can help cue tongue placement, jaw grading, and lip posture—often making difficult consonants easier to produce.

Start With the Basics: Vowel Overview

Below is a functional overview of English vowels and diphthongs, organized by tongue position, jaw height, and lip rounding. These categories are especially helpful when selecting facilitative contexts in therapy.

Key Vowel Features (Quick Reference)

• Rounded: lips rounded (e.g., /u/, /oʊ/)
• Unrounded: lips neutral or spread (e.g., /i/, /æ/)
• Front: tongue forward
• Central: tongue neutral
• Back: tongue retracted
• High/Close: jaw raised
• Low/Open: jaw lowered

These features are clinically useful when pairing vowels with consonants.

Shape/Facilitate Consonants Using Vowels

If a child can say vowels correctly, you can use that!

• placement of tongue in mouth to help facilitate certain consonants
• jaw grading, how open/closed the mouth is when saying a vowel can help shape certain consonants

Below is a chart indicating if a vowel is produced in the front, middle/central, and/or back of the mouth.

Use this! 

• Back vowels can help facilitate velar sounds such as /k/ and /g/. You can pick words like "hog" or "cough"
• Front vowels can help facilitate alveolar sounds such as /t/, /d/, /s/, and /n/. You can use words like "sit."

Below is a chart indicating if a vowel is produced with the mouth closed, somewhat open, or fully opened.

Use this!

• high vowels - you can use them to target alveolar sounds since the jaw is up!
• low vowels - you can use them to keep the jaw open to facilitate velar sounds

Below is a chart indicating if a vowel is produced with rounded or unrounded lips.

I use these all the time!

• Encourage lip rounding by pairing "sh" and "ch" with rounded vowels
• Sometimes a child is rounding their lips and you don't want them to! For this, use words with unrounded vowels.

Access Vowel-Focused Therapy Support

There is a real need for practical, research-aligned vowel materials in speech therapy—especially tools that connect vowels to functional articulation.

Inside the Speech Therapy Talk Membership, you’ll find materials that support:

• Vowel awareness
• Consonant facilitation
• Functional articulation practice
• Carryover into real-life speech

These are the new additions at Speech Therapy Talk Membership.

Members

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Non-Members

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It’s an easy way to build your therapy toolbox and experience how these strategies come together in practice.

References:

• IPA Vowel Chart