Q & A FlashCards, online (180 days). Textbooks, Courses, Books Simplified as FlashCards by Powell Publications.Very effective study tools especially when you only have a limited amount of time. They work with your textbook or without a textbook and can help you to review and learn essential terms, people, places, events, and key concepts. Q & A FlashCards run in any modern browser on any device. Registrations are not transferable.