Boonruang R. THE DEVELOPMENT OF A SUPPLEMENTARY READING BOOK SERIES, "LEARNING POEMS AND TEACHING VOWELS: WE LOVE PHAYAO," IN CONJUNCTION WITH THE FOUR BLOCKS LEARNING TECHNIQUE, AIMS TO IMPROVE READING COMPREHENSION ACHIEVEMENT FOR FIRST-GRADE STUDENTS. Education MCU [internet]. 2026 Sep. 1 [cited 2026 Sep. 1];13(2):43-55. available from: https://so02.tci-thaijo.org/index.php/EDMCU/article/view/287078