Technology can protect people and things — Technology, 4–6 years
Some technology forms a barrier or gives a warning when something may be damaged. Helmets, locks, guards and alarms protect in different ways.
Technology that protects
Protective technology gives people or objects a better chance of staying safe from a bump, fall, unwanted opening or fire. A helmet cushions a head, a lock keeps a door closed and an alarm calls attention to danger. Protection lowers a risk; it does not make risk disappear.
Why protect?
People and belongings can be hurt or damaged by accidents, weather or someone opening them without permission. A protective invention was made to make one of these problems less likely or to warn us early. The design depends on what needs protection and what could go wrong.
How a helmet helps
Imagine a child falling from a bicycle. 1. Without a helmet, the head may hit the ground directly. 2. With a helmet, its hard shell spreads the hit and its soft layer cushions it. 3. The head may still move and the helmet may be damaged, but the blow to the head can be smaller.
Protection is not magic
Someone may think a helmet or a seat belt means nothing bad can happen. That is understandable: the equipment is there to protect us, so it can feel completely safe. It only reduces some danger; using it correctly and behaving carefully still matter.
Protection around us
You may see helmets on bicycles, guards around hot parts, locks on doors and smoke alarms on ceilings. Each protects against a particular problem, so the same object cannot do every job. We can ask, “What danger is this designed to reduce?”
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