Letter sound
The C sound: how to teach it
Everything you need to practise the C sound at home — how the mouth actually makes it, the age most children get there, the mistakes that are normal along the way, and 159 practice words grouped from easiest to hardest. Free, no sign-up.
- Written
- /k/ and /s/
- Sound type
- stop, voiceless
- Usually mastered
- Age 3–4
- Kids call it
- the two-job letter
- Practice items here
- 159 words · 20 phrases · 20 sentences
Hear it first
This is the same “Teach Me” clip the app plays before practice. Listen together, then copy it a few times before touching any words.
How the mouth makes the C sound
C sounds just like K in cow. Push the back of your tongue up to the roof of your mouth. Pop it down fast.
- Tongue: Back of tongue pressed against soft palate
- Lips: Open and relaxed
- Air: Quick burst of air when tongue drops
- Voice: Off — the throat stays quiet, it is air only.
What usually goes wrong
These are patterns, not carelessness. Recognising which one your child is doing makes the practice far more targeted.
- Fronting the hard C — "cat" becoming "tat" — exactly like the K sound.
- Confusion about which sound the letter makes, which is a reading issue rather than a speech one.
Three things that help
- The letter C has two jobs: it says K in cat, cup and cold, and S in city, ice and circle.
- For speech practice, hard C is identical to K — same tongue, same pop, same games.
- Soft C is identical to S. If your child lisps on S, they will lisp on soft C too.
159 C words to practise
Every word here starts with the C sound, which is where a new sound should begin. Once it is reliable at the start of a word, the phrases and sentences below put it in the middle and at the end too.
Start here — short words
One-syllable words. Easiest to get right, so this is where a new sound should begin.
- cow
- corn
- coat
- cone
- coin
- cub
- cave
- cat
- cup
- cake
- car
- cap
- can
- cab
- calf
- camp
- card
- cart
- catch
- claw
- clay
- clam
- clap
- class
- clean
- climb
- clip
- clock
- close
- cloth
- cloud
- clown
- cob
- cold
- comb
- cook
- cool
- cot
- couch
- count
- court
- crab
- craft
- crawl
- cream
- creek
- crib
- crow
- crown
- crumb
- crust
- cry
- cube
- curl
- cute
- cut
- cage
- crane
- cliff
- clue
- coast
- crop
- cross
- crunch
- call
- calm
- cape
- crash
- croak
- coop
- cough
- colt
- core
Next — two-syllable words
Once the short words are reliable, longer words keep the sound accurate under more load.
- cookie
- camel
- candle
- candy
- carrot
- castle
- cabin
- cactus
- cowboy
- coffee
- collar
- color
- comet
- compass
- copy
- costume
- cotton
- cousin
- cowbell
- cozy
- cracker
- cradle
- crayon
- creature
- cricket
- crunchy
- crystal
- cuckoo
- cuddle
- cupcake
- curly
- curtain
- cushion
- custard
- cupboard
- cabbage
- caboose
- camper
- campfire
- campground
- canoe
- canyon
- captain
- carton
- cartoon
- cartwheel
- cocoon
- cocoa
- comfy
- concert
- cornbread
- cottage
- cowgirl
- critter
- curry
- corndog
- carpet
- cardboard
- clever
Challenge — longer words
Three syllables and up. Save these for when the sound is solid everywhere else.
- camera
- coyote
- crocodile
- coconut
- curious
- calendar
- canary
- cucumber
- caterpillar
- carnival
- casserole
- cauliflower
- colorful
- computer
- carousel
- cantaloupe
- caramel
- carnation
- cabinet
- cafeteria
- calculator
- canopy
- capybara
- carpenter
- cottontail
- cockatoo
- confetti
C phrases
The step between single words and real talking. Say the phrase together first, then let your child do it alone.
- A cow in a coat
- Corn in a cone
- A coin for the cub
- The camel's candle
- A cookie in the cave
- Cool cat
- Cozy cabin
- Crunchy carrot
- Cute cub
- Cold cocoa
- Clean cup
- Candy cane
- Crab claws
- Cupcake candle
- Clever clown
- Colorful crayon
- Camping cot
- Crispy cracker
- Calm camel
- Cowboy coat
C sentences
The last step before everyday conversation. Each sentence packs the C sound in several times, so one sentence is worth several words.
- The cow found a coin in the cave.
- The camel carried corn up the hill.
- The cub hid a cookie in its coat.
- Carla lit a candle on the counter.
- Colin put corn in the cone.
- The cat naps on the couch.
- The cow eats cold corn.
- The cook can cut the cake.
- A cub climbed the cliff.
- The clown claps for the cat.
- Count the coins in the cup.
- The camel naps in the cave.
- We eat cookies with cocoa.
- The crab hides in the cave.
- The cat licks the cupcake.
- Comb the cat before bed.
- The cow wears a cozy coat.
- The cub crunches a carrot.
- The clock in the cabin ticks.
- Catch the cat by the cart.
Three games for the C sound
Practice that does not feel like practice. A child will do fifty repetitions inside a game and refuse ten on a worksheet.
Hard or soft
Sort picture cards into a K pile and an S pile.
Cookie count
Count cookies for effortless hard-C repetitions.
City circle
Draw circles while saying soft-C words.
When to ask a professional
Most children have the C sound by around age 4. If your child is past that and it has not appeared, if people outside the family regularly cannot understand them, or if they are starting to avoid talking, book an appointment with a speech-language pathologist. One session will tell you whether this needs treatment or just time.
Help Me Talk is a practice app, not a diagnosis or a replacement for a licensed speech-language pathologist. If you are worried about your child’s speech, talk to your doctor or an SLP — this app is for the practice in between.
Age ranges follow the Iowa–Nebraska articulation norms (Smit, Hand, Bird & Bernthal), the same norms the app uses to suggest sounds by age.
C sound questions
- At what age should a child say the C sound?
- Most children have the C sound somewhere between three and four years old. It is one of the earlier sounds, so if your child is past four and still missing it, it is worth mentioning at their next check-up. Age ranges follow the Iowa–Nebraska articulation norms (Smit, Hand, Bird & Bernthal), the same norms the app uses to suggest sounds by age.
- Why does my child say C wrong?
- The most common pattern is fronting the hard c. Confusion about which sound the letter makes, which is a reading issue rather than a speech one. These are patterns, not laziness — the mouth is doing something consistent, just not the thing English needs. Once you know which pattern it is, the practice becomes much more targeted.
- How do I teach the C sound at home?
- C sounds just like K in cow. Push the back of your tongue up to the roof of your mouth. Pop it down fast. Start with the sound on its own, then short words, then phrases, then sentences — in that order. The letter C has two jobs: it says K in cat, cup and cold, and S in city, ice and circle.
- How many words should we practise in one go?
- Ten to fifteen words is plenty. Five to ten minutes a day beats a long session once a week, and stopping while your child is still enjoying it is what makes them willing to do it again tomorrow. This page has 159 C words, so you can use a different handful every day for weeks.
- When should I see a speech therapist about the C sound?
- If your child is older than four and the C sound is still not there, if strangers regularly cannot understand them, or if your child is getting frustrated or avoiding talking — those are the moments to ask. A speech-language pathologist can tell you in one appointment whether it needs treatment or just time. This app is practice, not a diagnosis.