The teaching video of the award-winning class "Right? The second volume of "Grade Two of Primary Mathematics" published by Beijing Normal University was collected and sorted by the listening station. Listening videos mainly cover high-quality classroom videos, open class videos, demonstration class videos, award-winning classroom videos, lecture videos and simulated lecture videos in primary and secondary schools. Through years of continuous updating and improvement, the video content of quality classes is rich, which is a powerful platform for teachers to listen to quality classes.