Sound Buttons in Phonics: What They Are and How to Use Them

If you have ever watched a phonics lesson in a primary school, you have probably seen sound buttons in action. Those small dots and dashes placed neatly under written words are one of the most widely used tools in phonics teaching across the UK. They look simple, but they do something powerful: they make the invisible structure of spoken language visible on the page.

This guide explains exactly what sound buttons for phonics are, how the dot and dash system works, and how teachers and parents can use phonic sound buttons to support children from Reception through to Year 2 and beyond.

What Are Sound Buttons?

Sound buttons are small visual markers written beneath letters in a word. Their purpose is to show children how many sounds (phonemes) a word contains and which letters map to each sound.

The system uses two markers:

• A dot is placed under a single letter that represents one sound.
• A dash (or short line) is placed under a group of letters that work together to produce one sound.

For example, in the word cat, each letter makes its own sound, so you would place three dots underneath:

In the word ship, the letters s and h work together to make the single sound /sh/. So you would place a dash under sh and dots under i and p:

Sound buttons are not tied to any single phonics programme. Whether a school follows Letters and Sounds, Jolly Phonics, Read Write Inc., Little Wandle, or another validated scheme, the dot-and-dash convention remains broadly the same. This makes them a universal tool that children encounter across different settings and resources.

Why Sound Buttons Matter

Learning to read requires children to understand that spoken words are made up of individual sounds, and that letters (or groups of letters) represent those sounds. This is the alphabetic principle, and it is at the heart of systematic synthetic phonics.

Sound buttons help in several important ways:

• Segmenting words: Sound buttons show children exactly where one sound ends and the next begins. This is essential for spelling, where children need to break a word into its component phonemes before choosing the right letters.
• Blending for reading: When children see the buttons under a word, they know how many sounds to say and which letters to blend together. They can point to each button in turn, say the sound, and then push the sounds together to read the word.
• Phoneme-grapheme correspondence: Sound buttons make the relationship between sounds and letters concrete. A child can see that sh is not two separate sounds but one unit, because the dash groups the letters together.
• Building confidence: For children who find reading tricky, sound buttons remove some of the guesswork. The buttons act as a scaffold, showing them exactly how to approach an unfamiliar word.

In classrooms, teachers often describe using sound buttons as “pressing the buttons” or “touching each sound.” Many teachers pair the technique with physical gestures such as “robot arms,” where children chop their hand along the word, pressing each sound button as they say the corresponding phoneme aloud.

Dots and Dashes Explained

The dot-and-dash system is straightforward once you know the rules. Let us look at each type of marker and how it applies to real words.

Dots: One Letter, One Sound

A dot goes under every single letter that produces its own sound. These are the simplest cases and the first ones children encounter when they begin learning phonics.

Notice that every letter gets its own dot because each letter maps to exactly one sound. Words like grip and stop have four letters and four sounds, so they receive four dots, even though the consonants sit next to each other at the start.

Dashes: Letters That Work Together

A dash is drawn under a digraph (two letters that make one sound) or a trigraph (three letters that make one sound). The dash signals to the child: “These letters belong together. Do not try to sound them out separately.”

Digraph examples:

Trigraph examples:

In the word night, the three letters igh work together to produce one sound. Even though it looks long on paper, it gets a single dash. Children learn to recognise these letter groups and treat them as a single button to press.

Split Digraphs

Split digraphs are one of the trickier concepts in phonics, and sound buttons help make them clearer. A split digraph is a pair of letters that work together to make one sound, but they are separated by a consonant. The common split digraphs are a-e, i-e, o-e, u-e, and e-e.

For example, in the word cake, the letters a and e work together to make the long /ay/ sound, but the letter k sits between them.

There are different ways to mark split digraphs with sound buttons. The most common approaches are:

• Arc or bridge: Draw a curved line (an arc) connecting the two letters of the split digraph, passing over the consonant in the middle. This clearly shows the child that the two letters belong together despite being separated.
• Single dash spanning both letters: Some teachers draw a longer dash that runs under all three letters (the first vowel, the consonant, and the final e), treating the whole group as one sound unit.
• Dash with a dot above: Place a dash under the split digraph letters and a dot above the consonant in the middle, showing it sits inside the digraph.

Whichever method a school uses, the key idea is the same: the child must understand that the split digraph letters make one sound together, even though they are not side by side.

Sound Buttons by Phonics Phase

In the Letters and Sounds framework (and the many programmes based on it), phonics teaching is organised into phases. Sound buttons become more complex as children move through the phases and encounter more graphemes. Here is how the buttons look at each stage.

Phase 2 Examples

Phase 2 is the starting point. Children learn individual letter sounds (s, a, t, p, i, n, m, d, g, o, c, k, ck, e, u, r, h, b, f, l). Most words at this stage are simple CVC (consonant-vowel-consonant) words, and every sound is represented by a single letter.

At this stage, children are working almost entirely with dots. The exception is ck, which is introduced in Phase 2 as a digraph, so words like duck and sock would use a dash under the ck.

Phase 3 Examples

Phase 3 introduces digraphs and trigraphs. Children learn graphemes such as sh, ch, th, ng, ai, ee, igh, oa, oo, ar, or, ur, ow, oi, ear, air, and ure. This is where dashes start appearing regularly alongside dots.

Children at this stage need to recognise each digraph and trigraph as a single unit. Phonic sound buttons are particularly helpful here because they prevent children from trying to sound out each letter individually, which would produce incorrect sounds.

Phase 4 Examples

Phase 4 does not introduce new graphemes. Instead, children learn to read and spell words with adjacent consonants, sometimes called consonant clusters. These include CCVC words (e.g., frog), CVCC words (e.g., tent), and CCVCC words (e.g., stamp).

The important rule with sound buttons for phonics at this stage is that each consonant in a cluster gets its own dot, because each consonant makes a separate sound.

Notice shrink in the table above. The sh is a digraph (one dash), but the remaining consonants and vowel each get their own dot. Phase 4 words can look daunting on paper, but the sound buttons break them down into manageable chunks.

Phase 5 Examples

Phase 5 introduces alternative spellings for sounds children already know, along with split digraphs. Children learn that the same sound can be written in different ways (for example, the /ay/ sound can be spelled ai, ay, a-e, or even ey).

Phase 5 words often have more complex patterns, but the principle stays the same. Identify each sound, decide whether it is represented by one letter (dot) or more than one letter (dash), and mark accordingly. This is the phase that is assessed in the Year 1 Phonics Screening Check, so confident use of sound buttons at this stage is especially valuable.

How Teachers Use Sound Buttons in the Classroom

Sound buttons are woven into daily phonics lessons in most primary schools. Here are the main ways teachers use them.

Modelling on the board. During whole-class teaching, the teacher writes a word on the whiteboard and adds the sound buttons underneath while talking through each sound. Children watch and listen, seeing how the word breaks down. This explicit demonstration is essential, especially when new graphemes are being introduced.

Guided practice. After the teacher models, children practise adding sound buttons to words themselves. This might be on mini whiteboards, in phonics workbooks, or on printed worksheets. The teacher circulates, checking that children are grouping the correct letters together.

Robot arms for blending. A popular technique is to have children point to each sound button in turn, saying the sound as they touch it, and then blending the sounds together to read the word. Teachers often call this “robot talk” or “robot arms,” with children chopping their arm in a mechanical motion as they segment and blend.

Assessment and intervention. Sound buttons are a quick diagnostic tool. If a child incorrectly places a dot under each letter in a digraph (for example, putting two dots under sh instead of one dash), the teacher can immediately see that the child has not yet internalised that grapheme. This makes it easy to target specific gaps.

Pseudo-words and alien words. In preparation for the Phonics Screening Check, teachers also use sound buttons with pseudo-words (also called alien words or nonsense words). Because children cannot rely on recognising the word by sight, they must use their phonics knowledge to decode it, and sound buttons provide the scaffold for doing so.

How Parents Can Use Sound Buttons at Home

You do not need to be a trained teacher to use sound buttons with your child. The technique is simple enough to use at home, and it works well alongside whatever phonics programme your child follows at school.

Write words on paper or a whiteboard. Choose words that match what your child is learning in school. Write the word clearly with plenty of space between the letters. Ask your child to say each sound while you add the dots and dashes together.

Let your child mark the buttons. Once they are confident, hand over the pen. Ask them to write the sound buttons under each word. Gently correct any mistakes, such as putting a dot under each letter of a digraph instead of a dash.

Use sound buttons during reading practice. When your child encounters a tricky word in a reading book, write it on a scrap of paper and add sound buttons. This can help them decode the word without feeling overwhelmed by the full sentence.

Start simple and build up. Begin with CVC words (three dots) and gradually introduce words with digraphs and trigraphs as your child gains confidence. The 44 phonics sounds page provides a complete list of the sounds your child will learn, which can help you choose appropriate words.

Practise with the KS1 Phonics app. Digital practice tools complement hands-on work. The KS1 Phonics Screening Check app gives children the opportunity to practise decoding both real words and pseudo-words, reinforcing the same skills that sound buttons develop.

Sound buttons are one of those deceptively simple tools that make a genuine difference in early reading. Whether you are a teacher looking for a refresher or a parent trying to understand what your child is learning in school, the dot-and-dash system is something you can start using straight away. Pick up a pen, choose a word, and start pressing those buttons.