The study investigated the influence of teachers instructional methods and teachers attitudes on the effective implementation of the Upper Basic Social Studies Curriculum in Rivers state. The study was a descriptive survey with a population of nine thousand and twenty two (9,022) Upper Basic three students and four hundred and twenty(420) social studies teachers, a sample of six hundred (600) students and forty two teachers (42) was selected using random sampling technique. A questionnaire was used for data collection. The reliability of the instrument was ascertained using Cronbach alpha test model to obtain an index of 0.78. Two research questions and two hypotheses guided the study. Mean and standard deviation were used to answer the research questions while one way analysis of variance (ANOVA) was used to test the hypotheses. The findings among others showed that teachers attitude and teachers instructional methods have significant influence on the effective implementation of the upper basic social studies curriculum in Rivers state. The study recommends that teachers with the right attitude should be rewarded and right methods should be introduced to teach social studies.