The app provides lessons and examples for using question tags in conversation. Users can test their understanding with quizzes and review detailed results, including missed questions.
The app offers lessons and quizzes on direct and indirect speech. It provides detailed results, progress tracking with charts, and customizable timer settings.
Learn rules related to of through detailed lessons and examples. Take quizzes to test understanding. Receive quiz summaries and explanations after each test.
The app provides lessons and examples for transforming sentences between active and passive voice. Users can study grammar rules by topic, take quizzes with detailed results, and track progress with a chart.
The app simulates a force table for investigating vector addition of forces. It provides realistic data with errors for analysis and reporting, similar to hands-on equipment.
The app provides free demographic features for location analysis. Users can access US Census-based ring studies and updated residential ZIP Code reports for site evaluation and personal use.