Sidewalk chalk are typically large colored (and sometimes white) sticks of calcium sulfate mostly used for drawing on pavement or cement sidewalk. It is sometimes used to draw a four square court or a hopscotch board. Artists such as Kurt Wenner and Julian Beever have created intricate and realistic street paintings using the chalk and pastels.

Sidewalk chalk is used at some universities to advertise for events, especially where there is much concrete. Prohibitions are set for where students can chalk, usually limiting it to areas that will be washed away with rain, or areas which are set to be cleaned of chalk markings.

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