Aloysius Aseervatham has been a teacher for forty-six years, teaching in eight countries worldwide, including Sri Lanka, England, Ghana, Nigeria, Malawi, Zambia, Papua New Guinea, and Australia. He has written over twenty books on various subjects; the main areas being mathematics, accounting, languages, and religion. Leslie Aseervatham has been a secondary school teacher of mathematics, science, and information technology in Brisbane, Australia, for over 20 years. A qualified chemical engineer, Les decided that teaching was his calling and enjoys educating the young students.