trampoline

Everyday

A trampoline is a strong piece of stretchy material held tight by springs on a frame, which you jump up and down on. tree →

In the lessons

In everyday play and safety, trampoline rules: one person at a time, use a safety net and padded springs, take off shoes, no somersaults without training, and an adult nearby. Many injuries happen when two people jump together. In science, a trampoline shows energy changing: stretched springs store energy and push you up again (elastic energy). Phrases: bounce on the trampoline, trampoline park, safety net.

Examples

• We bounced on the trampoline all afternoon. tree →
• Only one person on the trampoline at a time. tree →
• The trampoline has a safety net around it. tree →
• The springs push you back up into the air. tree →
• We went to a trampoline park for my birthday. tree →
• Take your shoes off before you get on the trampoline. tree →

Note

Spelling: tram-po-line, ending in -ine. Most trampoline injuries come from several children jumping together or falling off; a net and one-at-a-time help.