This is part of the 4-book SAT, GRE, GMAT, LSAT, MCAT, and PCAT prep series totaling 5,000 high-frequency words. Keys is an advanced, unique learning platform that simplifies complex subjects, aids memorization, and improves your scores on public exams. - Our thoughtful concept maps organize hundreds of terms into chapters and units - telling stories that simplify learning via subject context - Unique flow selectors ease access to terms and chapters - Each term has a subject specific definition with live links to relevant web pages - Terms use age appropriate words for kids, teens, and adults - depending on the specific app - Supporting images from search embed with no typing required - to associate terms with thousands of rich, graphical representations on the web, thus promoting unconscious competence (ie painless learning) - Classic flash card, match, and slots activities maintain interest during repetitive exposure - while stimulating kinesthetic neural bonds in your memory cortex - Innovative Pictionary with a search-bot game for testing comprehension - Unique, responsive animations for the best user experience on touch devices This game aids learning through: - Addictive action to repeatedly expose target words to the player - Holistic focus on meaning, association, and spelling concurrently - Associate real images with each each - including additional word meanings in slang or otherwise - Speed based to emulate SAT testing environments - Positive reinforcement with no penalties for mistakes Keys makes learning fun for all ages. - 'What a wonderful idea,' Becky Drummond, Santa Cruz, CA - 'Surprised by the impact of this app. New words appear in my social conversations, unconsciously. Great,' Liz Chung, New York, NY - 'Memorization has been my weakness. This app makes it easy,' Bob Cohn, Montreal, CN Join the 350,000 plus who have downloaded Keys apps.