Oil Palm Industry Economic Journal Vol. 22 (1) March 2022 p. 21 – 29 The Readiness of Secondary School Teachers for Sustainable Oil Palm Themed-based Teaching and Learning by Muhanizah Ahmad Mokhtar1 ; Nurfaradilla Mohamad Nasri1 ; Ruhizan Mohammad Yasin1 ; Nurul Illianida Roslan1 and Wan Nor Fadzilah Wan Husin2 DOI: https://doi.org/10.21894/opiej.2022.04Available Online: 8 April 2022 FULL TEXT | DOWNLOAD ARTICLE