https://www.actfl.org/sites/default/files/pdfs/TLE_pdf/TLE_Nov13_Article.pdf
Here, you'll find an introduction to the flipped language classroom, from ACTFL.
Flipped Learning provides extensive resources for designing a flipped class. You will be able to find tools, lessons, strategies, videos and podcasts about flipped learning.
This resource has been provided by the U.S. Department of State's Office of English Language Programs
https://www.pblworks.org/pbl-remote-learning
Techniques, technologies, and lesson plans for doing project-based learning in remote contexts.
https://nflrc.hawaii.edu/projects/view/2014A/
From the National Foreign Language Resource Center, this page includes a repository of PBLL blueprints (called "PEBBLES"), as well as rubrics for effective PBLL design.
Examples of projects for language learning
https://www.teachingenglish.org.uk/article/dogme-a-teachers-view
Dogme is a communicative approach to language teaching that encourages teaching without published textbooks and focuses instead on conversational communication among learners and teacher.
https://www.teachingenglish.org.uk/article/teaching-unplugged
Teaching Unplugged is the term used for a teaching method and philosophy which has three primary aims: teaching through conversation, taking out external input such as course book and technology and letting the lesson content be driven by the students rather than being pre-planned by the teacher.