Iworld is a modern, dynamic five-level course for teenagers. It is designed to take students from A1+ to B2 of the Common European Framework of Reference for Languages (CEFR) Iworld promotes critical thinking skills through meaningful communication. It expands students' knowledge by providing extensive opportunities for teenage learners to express their ideas and explore the world. Our state-of-the-art learning platform, UDPaccess, enhances students' learning experience. It provides a blended approach which integrates autonomous online learning with classroom teaching to help students develop 21st century skills.