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Science, engineering, and mathematics — biology, chemistry, physics, astronomy, earth sciences, social sciences, and technology research. A curated gateway to academic and professional scientific resources.
57129 resources
Summary of Krashen's 5 main hypotheses on this topic. In English and Portuguese.
His official website, containing online texts of numerous books and articles.
Interview by Robb Scott from ESL MiniConference, with a picture and extensive links.