Summary
Long ago, people used red paint on dangerous places.
Today we see red on stop signs, fire alarms, and warning labels.
Key Points
4 points1
Red stands out more than most colors.
2
It was cheap to make bright red pigments in history.
3
Seeing red tells us to be careful quickly.
4
Many safety signs use red to keep us safe.
New Words to Learn
1 wordspigment
a colour substance used to make paints
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