How to pedal ice in zero-based skating teaching

You fell backwards because your center of gravity was behind you. The key point of skating is not to skate like walking. When skating, you must bend your knees and lean forward slightly to ensure that your center of gravity is forward. Then, when skating, you should push the ice in eight steps: two toes are outward (the outer figure is eight), and then the left and right feet alternately push the ice obliquely backward.