Correlation and interaction of mathematics in the first grade of primary school: let students use mathematical knowledge and mathematical thinking mode in the process of inquiry, such as drawing curves by continuously measuring the temperature of a cup of hot water. Correlation and interaction of Chinese in the first grade of primary school: there are many opportunities for listening, speaking, reading and writing in science class. For example, let students write observation diaries, read popular science books, rearrange the information in scientists' biographies according to the clues of scientific inquiry, write scientific essays, and write and perform popular science dramas. The main contents of science courses are: 1, materials science, life science, earth and universe science, technology and engineering. 2. The basic concept of the course: it should be open to all students and provide suitable and fair learning opportunities for each student. Advocate inquiry learning and promote students' active inquiry. Protect students' curiosity and thirst for knowledge. Highlight students' dominant position.