1. computer viewing: use a computer browser to enter the national platform for wisdom education in primary and secondary schools, click on the course teaching column, and select the study period, grade, subject, version, volume and corresponding course catalogue to watch.

2. mobile phone viewing: download the smart primary and secondary school APP in the mobile app store, register and log in, click on the course teaching, select the corresponding grade, subject and version, and then select the corresponding course directory to watch.