BBC Learning English www.bbc.co.uk Busuu www.busuu.com Duolingo www.duolingo.com ELSA Speak elsaspeak.com Forvo forvo.com italki www.italki.com LingQ www.lingq.com Memrise www.memrise.com

Coursera www.coursera.org edX www.edx.org Hocmai hocmai.vn Khan Academy www.khanacademy.org LinkedIn Learning www.linkedin.com MasterClass www.masterclass.com Skillshare www.skillshare.com Udemy www.udemy.com Unica unica.vn

Codecademy www.codecademy.com Codewars www.codewars.com Exercism exercism.org F8 fullstack.edu.vn freeCodeCamp www.freecodecamp.org HackerRank www.hackerrank.com LeetCode leetcode.com roadmap.sh roadmap.sh The Odin Project www.theodinproject.com W3Schools www.w3schools.com

Britannica www.britannica.com Cambridge Dictionary dictionary.cambridge.org DeepL www.deepl.com Google Dịch translate.google.com Google Scholar scholar.google.com Laban Dictionary dict.laban.vn LongMan www.ldoceonline.com Oxford Learner's www.oxfordlearnersdictionaries.com Thesaurus.com www.thesaurus.com Wikipedia vi.wikipedia.org Wiktionary vi.wiktionary.org

Desmos www.desmos.com GeoGebra www.geogebra.org Mathway www.mathway.com PhET phet.colorado.edu Symbolab www.symbolab.com Wolfram Alpha www.wolframalpha.com

Anki apps.ankiweb.net Google Classroom classroom.google.com Kahoot! kahoot.com Proteus www.labcenter.com Quizlet quizlet.com ResearchGate www.researchgate.net Studocu www.studocu.com