According to the national health standard, the grade of boys in grade three is good when they jump 1 16 to 126, 104 to10, and the grade of 34 to 97 is qualified, and below 3 1.
Within one minute, the girls in grade three jumped from 125 to 139, from 109 to 17, from 39 to 102, and failed less than 36.
Origin:
Skipping rope has a long history. When Nu Wa "leads the rope in the mud and holds it by people", the rope will live with people. The ancients used ropes to keep records, and also tied harvested crops with ropes, or tied cattle and horses, tied prey and so on. Rope has become an important tool in human life. Therefore, skipping may have originated from primitive farming, hunting or military activities.
The 18th time in Jin Ping Mei, a novel of Ming Dynasty, the names "vault rope" and "jump hundred ropes" were used, both referring to skipping rope. But the "vault rope" gives us an inspiration to explore the origin of skipping rope, that is, the "vault rope" used in ancient wars.
Baidu encyclopedia-skipping rope