Practice questions with interactive exercises and progress tracking. Review vocabulary and grammar rules. Simulate exam conditions with timed practice tests. Receive feedback on answers and track improvement over time.
Practice ACT with 490 questions and 49 revision notes. Take mock tests with mixed questions. Receive instant feedback on answers. Review each question with detailed explanations. Track progress with a progress meter.
Create and manage custom vocabulary lists for foreign languages. Add words manually or from text. Practice with , review sessions, and quizzes. Support multiple languages and scripts. Organize words into categories and track progress over time.
Learn Chinese characters with animated stroke order demonstrations. Browse or search characters by category. Practice writing with visual guidance and access over 9000 characters.
Scan problems with camera to get instant answers. View detailed step-by-step solutions. equations manually or via photo. Perform calculations with a smart calculator. Export results and share solutions.
Explore historical events from the Big Bang to the Space Age. Listen to audio narratives about each period. Learn about early humans, ancient civilizations, and major revolutions. Track key developments in science, politics, and technology.
Solve linear programming problems using the simplex algorithm and MIP solver for 0-1 and integer variables. Input constraints and objectives. View solution details and sensitivity analysis. Export results as text files.
Learn differential calculus, solve equations, and work with matrices and CAS functions using step-by-step guides. Swipe through 220 screenshots showing exact key presses. View detailed instructions for graphing operations.
Graphing allows users to visualize mathematical functions with interactive sliders. Adjust parameters to see real-time changes. Explore multiple graph types. Save and share . Track progress with learning goals. Sync with educational platforms.