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Pebble

Pebbles
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Pebbles

A pebble is a rock with a size of 4 to 75 millimeters (some say 64 millimeters).

Pebble tools are among the earliest known man-made artefacts, dating from the Palaeolithic period of human history. They have been found at Olduvai Gorge (1.85 million years ago), and at Longuopo in China (1.8 to 1.5 MYA).

See also: gravel

Science Fair Project Encyclopedia Contents Page
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
Science kits, science lessons, science toys, maths toys, hobby kits, science games and books - these are some of many products that can help give your kid an edge in their science fair projects, and develop a tremendous interest in the study of science. When shopping for a science kit or other supplies, make sure that you carefully review the features and quality of the products. Compare prices by going to several online stores. Read product reviews online or refer to magazines.

Start by looking for your science kit review or science toy review. Compare prices but remember, Price $ is not everything. Quality does matter.
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