An Earthquake is a sudden tremor or movement of the earth's crust, which originates naturally at or below the surface.The word natural is important here, since it excludes shock waves caused by French nuclear tests, man made explosions and landslides caused by building work. There are two main causes of earthquakes.n Earthquake is a sudden tremor or movement of the earth's crust, which originates naturally at or below the surface.
Definition of TANGRAM. : a Chinese puzzle made by cutting a square of thin material into five triangles, a square, and a rhomboid which are capable of being recombined in many different figures.See tangram defined for kids. ADVERTISEMENT.efinition of TANGRAM. : a Chinese puzzle made by cutting a square of thin material into five triangles, a square, and a rhomboid which are capable of being recombined in many different figures. See tangram defined for kids. ADVERTISEMENT.
Tangrams are a great thing to incorporate into the mathematics classroom because they are fun, intersting, and meaningful. Tangrams help students develop mathematical concepts of fractions, spatial awareness, geometry, area, and perimeter (Rigdon, D., et al., 2000, p. 304.305).angrams present a new, interesting, hands-on way to deal with topics that most often are or can be quite boring and meaningless. Not only are tangrams a great way to help make geometry, fractions, etc. engaging, they also help make it authentic.