¹     Mosaics are a funny kind of art because you can walk on them. A mosaic is a picture made from bits of glass or stone stuck into cement or plaster. Mosaics can be on walls, floors, or ceilings. Mosaics can be inside or outside. Mosaics can be anywhere!
 
²     Mosaics have been around for over 4,000 years. The ancient Greeks invented mosaics. They covered their floors with pretty patterns. They also made scenes of people and animals. At first, they used pebbles, especially black and white ones. After a while, they made special, colorful bits of rock or glass for their mosaics. They were very tiny. These pebbles made the mosaics look like paintings.
 
³     The Romans learned about mosaics from the Greeks. They made courtyards for their fancy country houses. Sometimes they made a pattern that looked like an intertwined rope. They used this pattern for borders on their floors. Some Roman mosaics were covered with lava during volcanic eruptions. They were uncovered many centuries later. They still looked colorful.

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