Learn and mathematics through interactive animations. Explore gravitational fields, vibrations, waves, and electric currents. Study atomic and nuclear with visual simulations. View detailed explanations and diagrams for each topic.
Practice TOEFL IBT® questions with interactive multiple-choice exercises. Review vocabulary with clear explanations. Simulate real test conditions with timed practice sessions. Track progress through detailed performance reports.
Calculate geometric properties such as perimeter, area, and volume for shapes including squares, rectangles, triangles, trapezoids, circles, cubes, cylinders, and cones. Input dimensions to get results. Export calculations as text.
