HAPPY READERS IS A SET OF GUIDED READERS IN ENGLISH FOR CHILDREN AGED 3 TO 7 YEARS. THERE ARE 5 LEVELS, EACH COMPRISING 6 BOOKS. NEW VOCABULARY IS INTRODUCED GRADUALLY, WHILE AT THE SAME TIME, INTRODUCING SUFFICIENT WORDS TO ENABLE THE LANGUAGE TO FLOW NATURALLY. THE EARLY BOOKS USE SIMPLE SENTENCES, AND A COMBINATION OF SIMPLE PRESENT AND PRESENT CONTINUOUS TENSES TO PROVIDE A MORE NATURAL FLOW TO THE LANGUAGE.