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Level A1 – BeginnerCEFR A1
2 min
77 words
- Researchers at Georgia Tech make tiny mechanical particles now.
- The particles work without batteries, electronics, or computers inside.
- Each particle has flexible arms that bend and latch.
- The arms store tension like a small spring.
- A vibration releases the arms and makes particles spread.
- Particles follow simple rules: bend, latch, then release.
- One vibration can start a sequence of release.
- Together the particles move and make coordinated shapes.
- They could help medicine and could work in space.
Difficult words
- researcher — a person who studies or tests thingsResearchers
- particle — a very small piece of matterparticles
- flexible — able to bend or move easily
- latch — to hold something closed or fixed
- tension — a tight pull like a small spring
- vibration — a quick back-and-forth movement or shake
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Would you like these particles to help in medicine?
- Have you seen a small machine that moves without batteries?
