About Me
Hi, I’m Mark Keller — an English teacher, author, and creator of practical ESL resources designed to make learning and teaching English more effective, engaging, and fun.
With over 30 years of classroom experience, I specialize in helping learners and teachers around the world connect with real-world English. I’ve taught students of all ages and backgrounds, and I know what works in the classroom — and what doesn’t. That’s why I create books, lesson plans, and warm-up activities that are ready to use and easy to adapt.
Whether you’re a busy teacher looking for fresh ideas or a motivated learner trying to level up your English, my materials are made to save you time and deliver results.
🔗 Explore my resources: