|Duolingo is an American platform that includes a language-learning website and mobile app, as well as a digital language-proficiency assessment exam. The company uses the freemium model; the app and the website are accessible without charge, although Duolingo also offers a premium service for a fee.
As of November 2019, the language-learning website and app offer 95 different language courses in 23 languages. The app has over 300 million registered users across the world
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|The Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere. we help you learn what you want, when you want, at your own pace.
It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. The Khan Academy's materials and resources are available to you completely free of charge.
|Decision making is one of the last frontiers barely touched by science in day-to-day use. The Predictioneer's Game was written to help change that. The author is all for wisdom and "street smarts." But it is awfully hard to know who is wise and who has great intuition before decisions have to be made. It is much more helpful to have a proven method to connect the dots correctly beforehand. That is true whether addressing everyday life, business choices, or the biggest national security questions. The Predictioneer's Game is about learning to come up with reliable predictions to foresee and even engineer the future.
Click here to play the web apprentice version of The Predictioneer's Game.