COMMUNICATIVE GRAMMAR DIFFICULTIES OF GRADE 11 STUDENTS: INPUTS FOR DEVELOPING AND EVALUATING REINFORCEMENT LEARNING MATERIALS PSYCHOLOGY AND EDUCATION: A MULTIDISCIPLINARY JOURNAL 2023 Volume: 10 Pages: 856-867 Document ID: 2023PEMJ908 DOI: 10.5281/zenodo.8154852 Manuscript Accepted: 2023-15-7