Free for teachers
AI vocabulary builder
Attach the reading or name the unit, and Sparky picks the words students need to understand it. Each word comes with a student-friendly meaning, the line it comes from and an example, ready to print or share.
Used by 250,000+ teachers, and built to FERPA, COPPA and GDPR standards.
How the vocabulary builder works
Share the reading or the topic
Attach the chapter, article or speech students will read, or name the unit and grade, such as "8th grade, the Civil War".
Get the list
Sparky picks the words that matter most and gives each a meaning students can read. It may write the list in the chat. Ask for it "in a doc" to get a document you can print or export.
Shape it for your class
Ask for fewer words, simpler meanings or a translation. Sparky changes the same list.
What you get
Words that unlock the text
Sparky chooses the words students need to follow the reading, not a long list of words they already know.
The line each word comes from
When you attach a reading, each word shows the line it appears in, so students meet it in context.
Meanings students can read
Definitions written for the grade you name, with the meaning the word has in this text when it has more than one.
Examples and parts of speech
Each word can come with its part of speech and an example sentence of its own.
Translations
Ask for Spanish, Arabic or any language your students speak, and each meaning comes in that language too. Ask for the translated word as well if you want it.
Changes in place
Add a word, cut one or change the reading level, and the list updates without starting over.
Ways teachers use it
Before a novel or article
Preview the hard words before students read, so the first read is about the ideas.
Science and social studies units
The terms a unit is built on, such as photosynthesis or federalism, in one list for the word wall.
Multilingual learners
A list with each word's meaning in English and in the student's home language.
Stories with your words
The Vocabulary Based Text Generator writes a new passage that uses this week's words, so students see them again in context.
Data privacy
Safe to use with student work
What happens to the files you upload and what your students write in Flint.
Not used to train AI
Student data in Flint is never used to train AI models.
Not shared
Flint does not share student data, or any other user data, with third parties.
Kept separate
Each school's data is kept apart from every other school's, and the AI providers Flint runs on can't reach it.
Signed agreements, on request
Flint signs a data processing agreement with any school that needs one, written to US state law and EU GDPR.
What teachers say about Flint
"I used Flint to review a chapter prior to an assessment. The students could translate the terms into their native language to learn the content better. Flint was also able adapt and put together questions suitable for the students' ability."
Khim Tiam Lur
MYP Math Teacher at Changchun American International School
"For a school like ours, with a large number of multilingual learners, Flint has been a game-changer in making learning more accessible and engaging. The potential for inclusive and innovative activities is truly endless!"
Marie Sanz
Technology Integration Specialist at Changchun American International School
"Watching my multilingual learners confidently explore their curiosities with Sparky, switching fluidly between languages, showed me how AI can truly personalize learning and honor children's linguistic identities."
Lindsey Watts
Kindergarten and Nursery Teacher at Changchun American International School
Frequently asked questions
Is the vocabulary builder free?
Yes. It's free for teachers, and there's no limit on how many lists you can make.
How does Sparky choose the words?
It picks the words students need to understand the text or the topic, and skips words they already know. Tell Sparky how many words you want, or name words to add or drop.
Can it make a list from a book or article we're reading?
Yes. Attach the pages as a PDF, a Word file or a photo, or paste the text. Sparky takes the words from the reading and shows the line each one comes from.
Can it add translations?
Yes. Ask for the language you need, such as Spanish, and Sparky adds it to the same list. Have a fluent speaker check the translations before you hand the list out.
Can it write a story or passage that uses my vocabulary words?
Yes. Open the Vocabulary Based Text Generator and give it your words, the grade and the kind of text. It writes an original passage that uses every word, marks each one, and can add questions about the passage.
Can I print the list or turn it into flashcards?
Ask for the list in a doc to copy it, print it, save it to Google Drive as a Google Doc or download it as a Word file. To practice the words, ask Sparky in the same chat to make flashcards from the list.
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