Photo: Lucélia Ribeiro/Flickr

Open-source educational quizzes aim to teach without the teacher

The web has now become a great tool for learning — whether through Wikipedia or YouTube tutorials — but these channels sometimes lack the kind of interactivity of the physical classroom, where teachers can offer encouragement or help children work their way through a math calculation they’re stuck on. Aiming to replicate this, Oppia is a new open-source platform from Google that lets anyone create interactive online learning activities that give feedback at every step.