ESL Games for Teens & Adults: No Prep ESL Games for the Classroom. Perfect Teaching Materials for TEFL Lesson Plans (Games, Warmers & Fillers)These ESL games and instant conversation worksheets can be adapted to suit any level, objective and age as warmers, introductions, review activities or fillers to provide language practice and opportunities for feedback. They have been tried and tested in ESL classrooms all over the world with great success. Whether you're teaching children, teens or adults, knowing some good classroom activities is a must for any TESOL teacher. However interesting your lessons are, there will always be a point where students get bored of writing and listening - so having something prepared which will get them talking, laughing and even moving around will help them to stay engaged. Informal exercises are also an important way to get students comfortable with speaking and listening, and can help to put vocabulary and grammar into a practical context. While planned activities are important, it's also always worth having a few quick and easy games in mind in case you have time left over at the end of a lesson - so from quick games to creative projects, here are some of the best activities suitable for students at every level.