21 Balls Trampoline

Trampoline, an elevated resilient webbed bed or canvas sheet supported by springs in a metal frame and used as a springboard for tumbling. Trampolining, or rebound tumbling, is an individual sport of acrobatic movements performed after rebounding into the air from the trampoline.It was in Mexico that George got the idea to name his new contraption “trampoline”. The Spanish term for a diving board is el tramplin. Nissen simply added the “e”, thus coming up for the name of his invention.A trampoline is a mat of stretchable or webbed material, such as canvas, that is attached by springs to a metal frame. It is used for tumbling. A person performs acrobatic movements after rebounding into the air off the trampoline. This sport is called trampolining or rebound tumbling.