The aim of this research is to measure the impact of the development of the mathematics curriculum in the light of the meta-knowledge strategies to develop the skills of mathematical correlations and solve the environmental problems of primary school students.especially in view of the increasing environmental problems that require the cooperation of the community members and their groups to address them. The students' book and the teacher's guide were prepared to prepare the two units (integers.cleaner environment.engineering and measurement in green spaces) As a suggested approach. The teacher's manual for the two proposed units was prepared and then taught to a group of 45 students and students from the sixth grade according to the meta-knowledge strategies that were chosen (self-questioning) and Lynne Phillips ("modeling" - brainstorming) Mathematical correlation skills consist of (25) single.and also the scale of solving environmental problems consists of (50 The results revealed a statistically significant difference between the mean scores of the experimental and control groups in the telemetry to test the mathematical correlations in favor of the experimental group. There was a statistically significant difference between the mean scores of the experimental group and the control unit. Students of the experimental and control group in the remote dimension of the environmental problem solving scale and in all his skills for the benefit of the experimental group)