KidLearn Flutter App

A beautiful, interactive kids learning app built with Flutter. Features bilingual support (English/Bangla), alphabet learning, math games, drawing canvas, AI-powered stories, and speech practice.

Features

System Features Overview

• AI-enhanced mobile application for early childhood learning
• Supports interactive, bilingual, and personalized education

Alphabet Learning Module

• English alphabets (A–Z) with pronunciation
• Bangla alphabets: স্বরবর্ণ and ব্যঞ্জনবর্ণ
• Example words for each letter
• Text-to-Speech based pronunciation support

Mathematics Learning Module

• English and Bangla number systems
• Multiplication tables
• Basic arithmetic: addition, subtraction, multiplication, division
• Adjustable difficulty levels

Handwriting & Drawing Module

• Free-hand drawing and guided tracing
• Adjustable stroke width and color options
• AI-based handwriting recognition using Google Gemini Vision
• Undo and clear functionality

AI Story Generation Module

• Word-based personalized story generation
• Powered by Google Gemini AI
• Stories include moral lessons and comprehension questions
• Text-to-Speech narration in English and Bangla
• Speech & Pronunciation Module
• Speech recognition for pronunciation practice
• Vocabulary categories (animals, food, colors, numbers, family)
• Real-time pronunciation feedback
• Reference pronunciation using Text-to-Speech

Bilingual Support

• Full support for English and Bangla
• Easy language switching from home screen
• Persistent language preference storage

Additional System Features

• Child-friendly UI with animations and transitions
• Haptic feedback and onboarding tutorial
• Offline support for core learning features

Getting Started

Prerequisites

• Flutter SDK 3.0.0 or higher
• Dart SDK 3.0.0 or higher
• Android Studio / VS Code with Flutter extensions
• (Optional) Gemini API key for AI story generation

Installation

1. Clone or copy the project

   cd kidlearn_flutter

2. Install dependencies

   flutter pub get

3. Run the app

📱 Android

Using Emulator

# List available emulators
flutter emulators

# Launch an emulator
flutter emulators --launch <emulator_id>

# Run the app
flutter run

Build for Production

Android APK:

flutter build apk --release

iOS:

flutter build ios --release

Web:

flutter build web

Project Structure

lib/
├── main.dart                    # App entry point
├── app.dart                     # MaterialApp configuration
├── routing/
│   └── router.dart              # Navigation routes (go_router)
├── core/
│   ├── theme/
│   │   ├── app_theme.dart       # Colors, typography, styling
│   │   └── section_themes.dart  # Module-specific themes
│   ├── widgets/
│   │   ├── screen_background.dart
│   │   ├── kid_button.dart
│   │   ├── kid_card.dart
│   │   └── header.dart
│   ├── i18n/
│   │   └── language_controller.dart  # Localization
│   └── utils/
│       ├── bangla_digits.dart
│       └── haptics.dart
├── features/
│   ├── home/
│   ├── alphabet/
│   ├── math/
│   ├── draw/
│   ├── story/
│   ├── speak/
│   ├── onboarding/
│   └── tabs/
└── services/
    ├── gemini_service.dart      # AI story generation
    └── speech_service.dart      # Text-to-speech

Key Technologies

• Flutter - Cross-platform UI framework
• Riverpod - State management
• go_router - Navigation
• flutter_tts - Text-to-speech
• google_generative_ai - Gemini API for stories
• shared_preferences - Local storage
• hive - Fast local database

Future Work

• Content Expansion: Multi-language support, phonics-based learning, and advanced Bangla literacy (যুক্তবর্ণ).

• Gamification: Rewards, streaks, leaderboards, and interactive learning games.

• AI Enhancements: Personalized learning paths, adaptive difficulty, handwriting recognition, and pronunciation feedback.

• Parental Controls: Progress monitoring, screen time management, and multi-child profiles.

• UI/UX & Media: Dark mode, animated guides, accessibility improvements, audio/video learning support.

• Platform & Backend: Offline mode, cloud sync, Firebase integration, analytics, and cross-device support.

License

This project is open source.

Credits

• Jahidul Islam Sajib and Abu Bakar Siddique — Application design and development

• Abu Bakar Siddique and Jahidul Islam Sajib — AI model research and integration

• Abu Bakar Siddiq — UI/UX design support

• Syed Muhaiminul Haque — Testing and feedback

• Tusher Islam and Muhammad Ashraful - Paper Writing