Rocks are used all around us in many different ways. In the classroom, students use rocks everyday. Graphite, a metamorphic rock, is the part of the pencil used for writing.Slate, another metamorphic rock, was used to make blackboards in years past.Now most blackboards are constructed of man-made materials. Chalk is a soft form of limestone which is a sedimentary rock.ocks are used all around us in many different ways. In the classroom, students use rocks everyday. Graphite, a metamorphic rock, is the part of the pencil used for writing.
1 The pavers that they sell are priced anywhere from $3 to $6 per square foot. 2  According to the website PaverSearch.com, the price of pavers can range anywhere from $0.50 to as much as $15 per square foot. 3  The cost is going to greatly depend on the type of paver. Concrete pavers will cost anywhere from $5 to $12 per square feet. 2  Something such as natural stones are going to have to be customized most of the time, meaning a higher price tag. 3  Poured concrete pavers give the illusion of pavers and can cost anywhere from $3 to $7 per square meter.
The Costs. 1  The average cost per square foot of thin brick pavers is about $11.75. 2  At most, homeowners should expect to pay around $14.65 per square foot of thin brick pavers. 3  The minimum cost for a square foot of brick pavers is about $9.10.