05 / AI product · language education
Lesso — AI-powered lesson builder for language teachers

Overview
Lesso is an AI-powered platform built to help language teachers create engaging, personalized, and interactive lessons in minutes rather than hours. It combines artificial intelligence, content generation, student engagement tools, and classroom management into a single workflow—so educators can focus on teaching instead of assembling materials from scattered sources.
The product targets one of the biggest pain points in language education: lesson preparation. Traditional planning means hunting for exercises, writing grammar explanations, recording listening prompts, adapting content to proficiency levels, and packaging homework and speaking activities. A single lesson can take anywhere from thirty minutes to several hours. Lesso compresses that work through AI-assisted generation and a visual lesson builder teachers can refine before sharing with students.
Problem
Language teachers routinely spend a large share of their working hours preparing vocabulary drills, grammar explanations, listening activities, speaking prompts, homework, interactive games, and progress-tracking materials—often reworking the same structure for different levels and learning goals.
Most existing tools either offer static content libraries or generic AI output that does not respect how effective language lessons are actually structured: sequenced blocks, level-appropriate difficulty, speaking practice, and activities students complete—not just read.
Solution
Lesso introduces an AI-first lesson creation flow. Teachers describe the topic, select a student profile, language level, and lesson duration; the platform generates a complete lesson structure made of interactive content blocks and student activities.
The result is editable in a drag-and-drop builder before it reaches the classroom—preserving the speed of generation while keeping human judgment in the loop.
Key features
01AI lesson generation
Complete lessons from a single prompt, tuned to level and duration.
- Example: “Create a 60-minute B1 lesson about travelling by plane with vocabulary, speaking practice, roleplays, and listening activities.”
- Structured output aligned to CEFR-style levels and time budgets
02Interactive content blocks
AI-generated lesson building blocks teachers can rearrange or edit.
- Vocabulary, grammar, reading, listening, speaking
- Text content, images, and board-game-style activities
03Student activity blocks
In-platform tasks designed for active language practice.
- Multiple choice, true/false, fill-in-the-blanks, matching
- Short answers, writing tasks, grammar practice
- Voice messages and AI conversation modules
04AI conversations
Scalable speaking practice through realistic role-based dialogues.
- Job interviews, restaurant ordering, airport and hotel scenarios
- Business meetings and everyday conversation practice
- Engagement without requiring a human partner for every drill
05Visual lesson builder
Block-based editing instead of long-form document wrangling.
- Reorder, add, remove, and customize generated materials
- Adjust duration and difficulty without restarting from scratch
06Teacher marketplace
Community layer for publishing, browsing, and reusing lessons.
- Share materials with other educators
- Discover new teaching approaches and ready-made structures
07Student management
Creation and delivery in one place.
- Track progress, completion, and submitted activities
- Review engagement and organize learners into groups



Design approach
Simplicity
Complex AI capabilities sit behind familiar educational concepts. Teachers work with lessons, blocks, and activities—not model parameters or prompt engineering jargon.
Speed
Every step in the creation flow was optimized to reduce friction. Work that previously consumed hours can be drafted in minutes, then refined where it matters.
Accessibility
Clean visual design and predictable patterns make the platform approachable regardless of technical background—important for educators who need reliability more than novelty.
Technical highlights
Frontend
- React & Next.js with TypeScript
- Component architecture tuned for complex editor states
- Responsive layouts across teacher and student surfaces
Backend
- Node.js REST APIs
- AI-powered content generation pipeline
- Queue-based processing for long-running generation jobs
AI integration
- Structured lesson and activity generation
- Speaking scenario and conversation flows
- Image generation support
- Context-aware educational prompting
Infrastructure
- Cloud deployment with scalable workers
- Background job processing
- Real-time updates as generation completes
Results
Lesso reframes lesson planning from a manual, time-consuming process into a fast, interactive, AI-assisted workflow. Educators can produce materials significantly faster, deliver more engaging classroom experiences, personalize content to learner profiles, increase student participation, and spend less energy on administration—without sacrificing control over what actually gets taught.
My role
As creator and lead developer, I owned the product end to end: strategy and validation, UX/UI design, frontend and backend architecture, AI workflow and prompt design, infrastructure setup, feature planning, performance optimization, deployment, and ongoing iteration.
The project spans concept through launch—an AI-first platform that brings modern generation capabilities into everyday teaching workflows while keeping the experience simple, intuitive, and educator-focused.
Outcomes
- AI-generated lesson structures tailored to level, duration, and topic
- Visual block editor for post-generation customization
- Rich student activity types including AI speaking practice
- Teacher marketplace and student management in one product
- Full-stack architecture from prompts to production deployment
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