Resources for teaching pronunciation? Speaking is one of the most challenging things in the learning process, especially in English. Here are some tools that I’ve found so far. I hope they’ll be a good complement of Doulingo:

-Web page: http://www.yorku.ca/earmstro/ipa/diphthongs.html
-Videos: http://www.youtube.com/watch?v=jJR1VPzayu0 (Consonants) http://www.youtube.com/watch?v=eeaghqkLRi8 (Vowels)
-App (Apple o Android): http://www.macmillaneducationapps.com/soundspron/
-IPA (International Phonetic Alphabet):http://www.yorku.ca/earmstro/ipa/index.html

Do you have any other recourse for learning pronunciation in English or any other language? Thanks!