From the elementary school lens: one of my favorite beginning of the year brain-break/ice breaker activity is the idea of Stand Up-Sit Down. You put a statement on the board: Stand up if: I have pet. Students then get to see who in the class has a pet and who doesn't. You can allow students to share with a partner or the whole group about their pet or if students don't have one, what pet they might like to have. This helps students move and also get to make connections with others in the room! I usually create a slide show presentation with some statements and use them throughout the first week. That way students don't get bored and gives time for discussion if that's what you want to facilitate!

What curriculum do you use for classroom circles? I like to introduce my students to a circle by using this book called the Sharing circle. The animals in the story help the students learn how to resolve conflicts. We don't have a curriculum in my district, but we do teach our students how to handle conflicts in a peaceful way. I also use my circles to discuss how we can improve as a class as far as treating each other with respect.
Which Kagan strategies do you find the most useful in your classroom? I like to use quiz-quiz-trade and talking chips. Both of these strategies help the students with their speaking and listening skills.