Listening - Even though this says "listening game for adults", I think it would be great for the elementary classroom as well. It gives students the opportunity to strengthen listening skills as well as cooperation skills, plus it would be fun!
Listening is one of the hardest things about communication - here is a poster showing some obstacles that might get in the way of great listening skills. Link for poster here: http://www.witsprogram.ca/pdfs/schools/media-resources/blocks-to-listening-poster.pdf
A great list of questions that can be used to develop your students critical thinking skills while also practicing English conversation or English writing skills. Use these questions to get students to respond to an article, story, blog post, podcast, news item, etc. Infographic by Global Digital Citizen