generally, you can move a few meters on the ice with ice skating, but you can slide a few tens of meters with ice skates. what is the principle? lets take a look at ...

1. the exercise of balance car is called puzzle exercise in the medical field. through the movement of the whole body muscles, the body is in an active and relaxed s...

childrens balance bike, also known as a scooter. the english names are balancebike, runningbike, walkingbike, pushbike. the appearance is like a bicycle with the ped...

the earliest skates were in 1100 ad, when bones were mounted on the soles of long boots to help hunters hunt in winter. the first pair of skates was created explosiv...

it is understood that as early as 1110, in order to hunt in the winter, hunters put bones under long leather shoes, which is the earliest model of skates. in 1760, a...