Enter math to . Input numerical or literal , fractions, powers, and periodic numbers. Check correctness with a preview and step by step. Requires internet connection. Results are automated and may not always be accurate.
Edit and run PHP scripts directly within the . Use auto-complete and auto-indent features. Customize code color and font size. Execute code by selecting text in the built-in browser or text editor. Support keyboard input and cursor movement.
Study vocabulary or sentences by masking them with adjustable lines. Change line color based on accuracy. Automatically adjust lines for PDFs and fix angles. Batch mask content using search. Import files from cloud storage or device.
Access all content with a subscription. View and complete lessons tailored for 2nd graders. Track progress and receive feedback. Cancel anytime after the 7-day free trial. Renew automatically unless turned off 24 hours in advance.
Explore car systems through interactive 3D simulations. View detailed descriptions of key components. Engage in simulations to develop technical understanding. Use the suggest simulation tool to request custom content.
Study for CDL permit tests with offline access, practice quizzes matching real DMV exams, and choose between Class A or B licenses and endorsements. Track progress and prepare for Commercial Learner's Permit exams.