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Concrete Mathematics: A Foundation for Computer Science, by Ronald Graham, Donald Knuth, and Oren Patashnik, first published in 1989, is a textbook that is widely used in computer-science departments as a substantive but light-hearted treatment of the analysis of algorithms.
In philosophy and the arts, a fundamental distinction exists between abstract and concrete entities. While there is no universally accepted definition, common examples illustrate the difference: numbers , sets , and ideas are typically classified as abstract objects, whereas plants , dogs , and planets are considered concrete objects.
ISTE released the first version of the Student Standards in 1998 under the name National Educational Technology Standards (NETS). At that time, the standards focused on technology skills in students. [1] Standards for teachers and administrators followed in 2000 and 2001, respectively.
In mathematics education, a manipulative is an object which is designed so that a learner can perceive some mathematical concept by manipulating it, hence its name. The use of manipulatives provides a way for children to learn concepts through developmentally appropriate hands-on experience.
Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material. [2] Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. [3]
Our goal is to make a concrete contribution to the debate over which types of policies are required in order to improve the quality of Hispanic education. With that in mind, we seek to shed light on some of the relevant issues facing policymakers and the range of factors at play in forming the educational situation of Hispanics in the US.
The issue with associating a concrete definition to the term sociological abstraction, is that there is no universally accepted definition. Although the earliest form of abstraction in sociology was discussed by sociologist Talcott Parsons in the 1950s, his work in The Social System (1951) failed to identify an exact definition.
Polymer concrete is a type of concrete that uses a polymer to replace lime-type cements as a binder. One specific type is epoxy granite , where the polymer used is exclusively epoxy . In some cases the polymer is used in addition to portland cement to form Polymer Cement Concrete (PCC) or Polymer Modified Concrete (PMC). [ 1 ]