This seminar discusses using ice breakers and warm ups in teaching to help students relax and learn more effectively. Ice breakers at the beginning of class help students get to know each other, while warm ups activate students' prior knowledge on the day's topic. Best practices include keeping activities short and fun, using both speaking and non-verbal activities, and connecting warm ups to the lesson. The document also discusses characteristics and approaches for teaching teenagers aged 12-17, including encouraging independence, group work, and connecting to students' interests. Examples are given of project-based learning activities and their benefits for developing 21st century skills.