Bilingual AAC is the use of an augmentative and alternative communication system to support a child who lives with more than one language, so they can communicate across both languages in their life. For the many AAC users growing up in multilingual homes, this opens up communication with everyone in their life, from grandparents to classmates. This guide walks speech-language pathologists and families through how to set up bilingual AAC, choose vocabulary for two languages, model in both, and write goals that honor the whole communicator. If you are setting up a new AAC user, it pairs naturally with how to get started and with the app-agnostic approach that makes multiple languages possible on one device.
Key Takeaways
- Bilingual AAC supports a child across both languages, so the AAC user can connect with everyone in their life.
- All the languages in a child’s life belong on the device. Research on bilingual development shows children can grow more than one language at the same time.
- Core vocabulary carries most of everyday communication and overlaps heavily across languages, which makes it the natural starting point for a bilingual system.
- An app-agnostic device runs AAC apps with multiple languages, bilingual page sets, or a language-switch button, so one device can serve a multilingual home.
- Families support bilingual AAC most by speaking and modeling in the language they know best during everyday routines.
- Goals written around communication functions, rather than one language, let progress count in either language the AAC user chooses.
What Bilingual AAC Means
Bilingual AAC means an AAC user can communicate in more than one language through their system, across whatever mix of settings and relationships those languages show up in. Nearly one in five people aged five and older in the United States speaks a language other than English at home, according to the U.S. Census Bureau, which means many of the children on an SLP’s caseload are growing up with two or more languages around them. AAC users are part of that picture.
Each of a child’s languages connects them to different people and parts of life, and those languages rarely stay in separate boxes. One language might carry family meals, grandparents, jokes, and cultural identity, while another carries much of the classroom and academic content. But many children use both languages at home, switch between them in the same conversation, or attend dual-language programs where both languages show up at school too. Bilingual AAC keeps every language a child lives with open, so they can take part fully wherever they are and whoever they are with.
The American Speech-Language-Hearing Association’s practice portal on bilingual service delivery describes providing services that account for all of a person’s languages, including the home language a child brings to every setting. For AAC users, that principle shows up in the vocabulary you choose, the languages you model, and the way you write goals.
Why the Home Language Belongs on the Device
The home language belongs on the AAC device because it is where the child connects most deeply with family, culture, and daily life. When the home language is part of the system, the AAC user can greet a grandparent, ask for a favorite family food, and join conversations at the dinner table, all using their own voice.
Research supports this directly. Studies of bilingual development, summarized in the ASHA practice portal on bilingual service delivery, show that children are fully capable of developing two languages at the same time, and that supporting the home language strengthens overall communication. The same holds for children who use AAC. Including the home language is one of the most supportive choices a team can make, and it is a natural extension of presuming competence in every AAC user.
There is also a simple relationship reason. Caregivers communicate most richly in the language they know best. When families are encouraged to use their home language, the AAC user hears more language, more often. This pairs well with the broader idea that AAC works best when it lives in the home, woven into the everyday routines a family already shares.
Building a Bilingual AAC System
A bilingual AAC system rests on a few supporting pieces that work together: one device the child can use everywhere, core vocabulary that spans both languages, fringe words drawn from the child’s culture and home, modeling in both languages, and a family partnership that keeps it all going. No single piece does the work alone, and you do not have to build them in a fixed order.
Think of these pieces as a set of supports that grow together. A child who has rich core vocabulary in both languages still needs partners who model in both, and a device that travels with them everywhere. The American Speech-Language-Hearing Association’s practice portal on AAC describes AAC implementation as ongoing collaborative decision making across the team and the family, which is exactly the kind of partnership a bilingual system depends on. When the device, the words, and the people all pull in the same direction, a multilingual AAC user has the fullest possible set of ways to communicate.
Choosing Core Vocabulary for Two Languages
Start a bilingual vocabulary with core words, because core words carry most of everyday communication and overlap heavily across languages. Words like want, more, go, stop, like, help, that, and finished show up constantly no matter which language a person speaks. Building a strong core gives the AAC user flexible words they can combine across countless situations, which is the same foundation behind good AAC device personalization for any learner.
Many AAC apps let you label the same symbol in more than one language, or offer matched core boards in different languages with the same layout in each. That shared layout matters. When the word more sits in the same spot whether the app is set to English or Spanish, the AAC user keeps the motor pattern they have already learned and simply hears a different voice come out.
Fringe vocabulary is where each language and culture shows its character. Fringe words are the specific names, foods, songs, places, and people tied to a child’s life. A few ways to gather them:
- Ask the family what fills their days. The foods they cook, the shows they watch, the names of relatives, and the songs they sing point straight to the fringe words worth adding first.
- Include cultural and celebration words. Holidays, traditional foods, and family activities give the AAC user real things to talk about with the people who matter most.
- Add words in the language they are lived in. A dish the family names in their home language belongs on the device in that same language, the way the child hears it every day.
A short conversation with caregivers is the best guide to which words matter this week. The family knows their home and their child, and they are the natural partner in deciding what to add next.
Modeling in More Than One Language
Modeling in both languages means partners use the AAC device to show messages in whichever language they are speaking, so the AAC user sees how each language maps onto their system. This is aided language stimulation applied across two languages: as you talk, you also touch the matching words on the device.
In practice, partners model in the language they are already using in the moment. A parent reading a bedtime story models on the device in the language they are reading in. A teacher in a dual-language classroom models in whichever language the lesson is using. The AAC user gradually connects each spoken language to the words and the voice on their device. You do not need to model both languages in the same breath, and you do not need to translate every utterance. Natural, in-the-moment modeling in whatever language is being spoken is what builds the connection.
For families, the message is freeing: keep speaking the language you know best, and let the device be part of those conversations. The speech therapist can show a caregiver a few simple ways to point to words while they talk, so modeling becomes part of cooking, playing, and getting ready for bed.
How the Device and App Support Multiple Languages
The device and the app divide the work of bilingual AAC between them, and an app-agnostic device keeps your language options open. The QuickTalker Freestyle™ speech device is hardware that runs whichever AAC app fits the learner. Because the hardware is separate from the software, you and the family can choose an app whose language features match the household, and switch apps later on the same device if the child’s needs change.
Where multiple languages live in a bilingual setup:
- The app holds the languages. Many AAC apps offer more than one language, bilingual page sets, or a button that switches the voice and labels between languages. Choosing the right app is how you put both languages in the AAC user’s hands.
- The device travels with the child. A rugged case, a handle strap, and a reliable kickstand let the AAC user carry the same device from home to school and everywhere in between, so all of their languages live on one familiar system.
- The voice can match the language. Many apps offer voices in different languages, so a child speaking their home language can do so in a voice that fits that language.
This is the heart of the app-agnostic approach: families choose the app, and the app brings the languages. It also connects to a broader truth that AAC has no prerequisites and is for every communicator, in every language they live with.
Writing Goals for Bilingual AAC Users
Write goals around communication functions rather than a single language, so progress counts in either language the AAC user chooses. A goal that targets “combining two words to comment across settings” can be met in either of the child’s languages, which honors the whole communicator and keeps the plan flexible. Counting progress in either language keeps the full picture of the child’s communication in view.
A few patterns that work well for multilingual AAC users:
- Present levels: describe each language the child uses and where it shows up, so the team has a full picture of the communicator.
- Function-based goal: “Across daily routines, the AAC user will combine two or more words to make a request or comment in four out of five opportunities,” counted in either language.
- Partner support: name modeling in both languages as part of the plan, so the home language is built into how the team supports the goal.
When you write the plan around AAC use and communication functions rather than a specific language or device, you keep it centered on the student and flexible as they grow. This mirrors the broader work of effective AAC evaluations, which look at the whole child and the full set of languages and settings in their life. A child’s home language is an asset to build on, and goals that honor it keep the plan centered on the student.
Frequently Asked Questions
What is bilingual AAC?
Bilingual AAC is the use of an augmentative and alternative communication system to support a child who lives with more than one language. It means the AAC user can access vocabulary, model, and converse in any of their languages, across whatever mix of settings and relationships fills their days. The goal is a single communicator who can connect with everyone in their life.
Should AAC include a child’s home language?
Yes. The home language is where a child connects with family, culture, and daily routines, so it belongs in the AAC system right alongside every other language they use. Research on bilingual development shows children can grow more than one language at the same time, and AAC supports that same path. Including the home language gives the AAC user the most people to talk to.
Can one AAC device support more than one language?
Yes. An app-agnostic device like the QuickTalker Freestyle runs whichever AAC app fits the learner, and many AAC apps offer more than one language, bilingual page sets, or a language-switch button. Because the hardware is separate from the app, families can pick the app whose language features match their household, then adjust as the child grows.
How do you choose core vocabulary for a bilingual AAC user?
Start with core words that work across topics and settings in both languages, such as words for want, more, go, stop, like, and help. Core words carry most of everyday communication, and many overlap in meaning across languages. Then add fringe words tied to the foods, names, songs, and routines specific to the child’s home and culture. A short conversation with the family is the best guide to which words matter most.
How can families support bilingual AAC at home?
Families support bilingual AAC most by speaking their home language naturally and modeling on the device in that language during everyday routines. There is no need to switch to English at home. When caregivers narrate meals, play, and bedtime in the language they know best, the AAC user hears rich language and sees how it maps onto their device. The speech therapist can show families a few simple ways to model in the language they use.
How do you write IEP goals for a bilingual AAC user?
Write goals around communication functions rather than a single language, so progress counts in either language the child uses. For example, a goal can target combining two words to comment across settings, which the AAC user can meet in either of their languages. Naming every language the child uses in the present levels and keeping the goal language-flexible honors the whole communicator and keeps the plan centered on the student.
Putting Bilingual AAC to Work
If you are introducing bilingual AAC to a team for the first time, start with the home language. Ask the family which languages fill their days, build a strong core that works across both, and add the cultural fringe words that give the AAC user real things to talk about. From there, modeling in both languages and goals written around communication functions keep the whole communicator moving forward.
If you would like a partner in this work, explore how to get started with QuickTalker Freestyle or reach out to the SLP Empowerment Team for a consult. Every AAC user deserves to communicate with everyone in their life, in every language they call their own, and a bilingual system is how you open that door.
