Play 3D and AR versions of the classic 15- game. Solve 100 puzzles across 4 categories: Landmarks, People, Animals, and Vehicles. Explore detailed models of iconic subjects like the Statue of Liberty and Albert Einstein.
Prepare for NBCOT OTR and COTA exams with personalized study plans. Review practice questions, track progress, and access exam content outlines. Simulate conditions and receive feedback on performance.
Browse from over 6500 authors including Woody Allen, Albert Einstein, and Mahatma Gandhi. Rate, rank, and comment on . Save favorites, search for specific , and share via email, Facebook, Twitter, or message. Submit your own .
To with interactive books, games, and movies featuring Zac the Rat. Practice vowel sounds and spelling through structured lessons. Track progress with numbered sections and positive reinforcement activities.
Visualizes audio signals in real time with a spectrum display. Connects to microphones or hi-Z devices via mini-jack. Measures sound frequency and amplitude. Adjusts visual settings for different sound sources. Displays real-time audio analysis data.
Review and analyze practice questions with detailed explanations. Create customized quizzes by topic or difficulty. Track progress over time. Access study materials and tips. Simulate conditions with timed practice sessions.
Explore graphical solutions to differential equations. Plot Fourier series approximations of periodic functions. Visualize heat equation solutions with spatial and temporal animations. Graph wave equation solutions in one dimension.
Explore educational videos and interactive content designed to spark curiosity and creativity in young children. Watch curated animations, play with interactive games, and access parent guides to support learning at home.
Study for the exam with practice questions, detailed answer explanations, and performance analytics. Choose from multiple test modes. Track progress and review weak areas. Access updated content regularly.
Solve math problems from past competitions. Track progress and compare with others. Access full solutions for each problem. Compete on a leaderboard. Practice for School, Chapter, State, and National levels.
Learn with a , grammar guide, translator, and interactive games. Practice with examples, inflection tables, and AI exercises. Translate instantly between 34 languages and . View clear meanings with usage tips.
Learn a new through movie clips and subtitles. Watch videos with interactive captions. Practice listening and speaking with built-in exercises. Track progress with lesson completion and quiz results. Share achievements on social media.
Learn vocabulary through with memorization tests and review of incorrect answers. Select from multiple languages including English, Japanese, Korean, Chinese, Portuguese, German, and others.
Create and edit with multiple question types. Sync instantly with . Import from Sheets and preview content. Generate QR codes and share via social platforms. Delete or modify existing as needed.