
Wondering how to teach the consonant digraph th? The English language is filled with unique sound combinations that can challenge early readers. Among these, digraphs stand out as particularly important building blocks for phonemic awareness and reading fluency. The “th” digraph appears in numerous high-frequency words and represents sounds that don’t exist in many other languages, making it both essential and challenging to master.
What is a digraph?
A digraph occurs when two letters combine to make a single sound. Unlike blends, which combine two letter sounds in a single sound (such as “bl” in “blue”), digraphs create an entirely new sound that differs from the individual letters. Common English digraphs include “sh,” “ch,” “ph,” “wh,” and our focus today, “th.”
The Two Sounds of “th”
What makes the “th” digraph particularly interesting is that it represents two distinct phonemes in English:


The Importance of Teaching the “th” Digraph in Early Literacy
Foundation for Reading Fluency
The “th” digraph appears in numerous high-frequency words that children encounter early in their reading journey. Words like “the,” “this,” “that,” “they,” and “with” are among the most common words in English, appearing in virtually every text a child will read.
Phonemic Awareness Development
Learning digraphs helps children understand that written language is a code representing spoken sounds. This awareness is crucial for both reading and spelling development.
Cross-Linguistic Significance
Many languages don’t contain the “th” sound, making them particularly challenging for English language learners. Early, explicit instruction helps all students develop proper pronunciation.
Effective Strategies on how to teach the consonant digraph “th”
Multi-Sensory Approaches
- Visual Cues: Create a visual anchor chart with the “th” digraph and images of words containing it.
- Kinesthetic Activities: Have students place their fingers in front of their mouths to feel the difference between the voiced and unvoiced “th” sounds.
- Auditory Discrimination: Play sorting games where students determine if a word contains the voiced or unvoiced “th” sound.
Explicit Instruction Sequence
- Introduction: Begin by explicitly teaching that the two letters “t” and “h” together make a special sound.
- Demonstration: Model proper tongue placement (between the teeth) and provide clear examples.
- Guided Practice: Use decodable texts with “th” words for supported reading practice.
- Independent Application: Encourage students to find “th” words in their reading and add them to a class word wall.
Engaging Activities
- Story Creation: Collaboratively write a “th”-themed story, or download one of the stories below.
- “Th” Treasure Hunt: Hide objects or pictures beginning with “th” around the classroom for students to find.
- Thumbs Up/Thumbs Down: Read words aloud and have students give thumbs up if they hear “th.”
- Sentence Generation: Have students create sentences using multiple “th” words.
Common Challenges and Solutions
Challenge:
Confusing “th” with “f” or “v” sounds.
Solution:
Use a mirror to show proper tongue placement between the teeth. Contrast minimal pairs like “thin/fin” or “than/van” to highlight the differences.
Challenge:
Distinguishing Between Voiced and Unvoiced “th”
Solution:
Create kinesthetic associations—perhaps touching the throat to feel vibration with voiced “th” words vs. no vibration with unvoiced ones.
Challenge:
Inconsistent Application in Reading and Writing
Solution:
Create personal “th” word dictionaries where students collect words they encounter. Regularly revisit these collections to reinforce recognition.
Download the worksheets below to practice the sounds.
Differentiation for Diverse Learners
For English Language Learners
- Focus initially on high-frequency “th” words
- Use visuals and gestures to reinforce meaning
- Provide additional practice with sounds that may not exist in the student’s first language
For Advanced Readers
- Explore less common “th” words like “thesis,” “thesaurus,” or “thorough”
- Investigate word origins and how “th” appears in words with Greek roots
Assessment Ideas
- Running records noting correct “th” pronunciation
- Dictation exercises with “th” words
- Word sorts between voiced and unvoiced “th” words
- Creation of sentences containing “th” words
We hope this article has given you more insight into how to teach the consonant digraph th.

How to teach the consonant digraph CH
In this post: Wondering how to teach the consonant digraph th? The English language is filled with unique sound combinations that can challenge early readers. Among these, digraphs stand out as particularly important building blocks for phonemic awareness and reading fluency. The “th” digraph appears in numerous high-frequency words and represents sounds that don’t exist…
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