This study aim to determine the feasibility poster nutrient content of melon which were sold in Pontianak as a medium learning on sub material about nutrient in class XI SMA. This study form was descriptive with questionnaire as non test collection data technique. Validation was done by 2 Biology Education lectures and 3 biology high school teachers in Pontianak. The validation results were analyzed using the Content Validity Ratio (CVR). From the analysis of data showed that the poster nutrient content of melon which were sold in Pontianak city feasible to use as a learning medium in sub material about nutrient in class XI SMA with all the criteria scores of 0.99 and has been with a minimum value of CVR Lawshe
