Zooming in and out — Computing, 4–6
Zoom changes how large something looks without changing the thing itself. Computing, 4–6 years.
See more or see closer
Zooming changes the size of what you see on the screen. Zoom in to inspect a tiny detail, such as a line on a map. Zoom out to see more of a whole page or picture. The digital object has not grown or shrunk; only your view has changed.
Why zoom was needed
Screens are small, but maps, drawings, books, and photos can contain both tiny details and a large overall shape. One fixed size cannot show both clearly. Zoom was created so you can choose between seeing the big picture and looking closely, without making a new copy each time.
Zoom on a map
You open a map and see a whole town, but the street names are too small. First, zoom in twice using the plus button or two fingers. The streets become easier to read, but fewer streets fit on the screen. Next, zoom out once when you want to find the town again.
Zoom is not making more
A reasonable mistake is thinking that zooming in creates extra detail, like finding a hidden street that was not there before. It only makes existing information easier to see. If the picture has very little detail, making it huge may show fuzzy blocks instead of a clearer picture.
Zoom in everyday life
Zoom can help you read a menu, inspect a photo, follow a map, or choose a small button. You may see it in an e-book, a video call, or a drawing app. Remember that zoom changes what fits on the screen; it does not change the printed page or the real place.
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