In a spiral progression curriculum, all learning competencies at every grade level must be completely covered within a school year. Hence, all competencies at every grade level must be completely covered within a school year. This study aims to develop complementary learning resources (CLeaR) in Grade 8 Mathematics, a learning material intended for the uncovered learning competencies. The 4D development model was utilized in the study. The respondents were teachers and experts. The data were obtained using unstructured interviews and DepEd LRMDS standards for Print Resources which was modified to include other factors. The study found that the CLeaR: (a) comprises 12 self-directed worksheets intended for the 12 uncovered learning competencies; (b) has two main features designed to serve its purpose; and (c) passed all the standards for print resources and other factors. It can be concluded that the main purpose of developing the CLeaR is for the learners to acquire all the competencies in Grade 8 Mathematics. Teachers are encouraged to use the CLeaR to achieve this goal. Doing so would at the same time test the effectiveness of the developed learning resource and other necessary features may be introduced or added.