Nuttapong Rutamornchai (Teacher Kava) has been working as an English language teacher and tutor. He graduated with an M.A. in Applied Linguistics for English Language Teaching from King Mongkut's University of Technology Thonburi (KMUTT). With several years of experience at schools, tutoring schools, and universities, he specializes in course and materials development, language testing and assessment, and teaching integrated English skills and business English. His academic and research interests include English language teaching (ELT), second language vocabulary acquisition, and lexical inferencing.