MERDI

1. Vocabulary - Relational Matrix Learning 2. Grammar - critical reading, structural composition, speech development 3. Speech Development - interactive speech development * Multiple language versions (Korean, Japanese, Chinese, Vietnamese, Spanish, Russian, German, French, etc.) * Books, web, mobile app platform paid content service (online and mobile platform education content service) * Off-line learning extension centers *Technology integrated learning (speech recognition, interactive animation and scenario settings