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The first two in the sequence are by far the most common; 'tertiary' appears occasionally, and higher numbers are rare except in specialized contexts ('quaternary period'). The Greek series proto- , deutero- , trito- , ... is only found in prefixes, generally scholarly and technical coinages, e.g. protagonist, deuteragonist, tritagonist ...
Educational stages are subdivisions of formal learning, typically covering early childhood education, primary education, secondary education and tertiary education.The United Nations Educational, Scientific and Cultural Organization recognizes nine levels of education in its International Standard Classification of Education (ISCED) system (from Level 0 (pre-primary education) through Level 8 ...
Primary: involves the retrieval and production of raw-material commodities, such as corn, coal, wood or iron. Miners, farmers and fishermen are all workers in the primary sector. Secondary: involves the transformation of raw or intermediate materials into goods, as in steel into cars, or textiles into clothing. Builders and dressmakers work in ...
Primary sector: 40%; Secondary sector: 40%; Tertiary sector: 20%; More machinery is deployed in the primary sector, which reduces the number of workers needed to produce a given output of food and raw materials. Since the food requirements of a given population do not change much, employment in agriculture declines as a proportion of the ...
Post-secondary non-tertiary education: Programmes providing learning experiences that build on secondary education and prepare for labour market entry or tertiary education. The content is broader than secondary but not as complex as tertiary education. 5 : Short-cycle tertiary education
At the top level, they are often classified according to the three-sector theory into sectors: primary (extraction and agriculture), secondary (manufacturing), and tertiary (services). Some authors add quaternary (knowledge) or even quinary (culture and research) sectors. Over time, the fraction of a society's activities within each sector changes.
Primary, secondary and tertiary sources are broadly defined here as follows: Primary sources are sources very close to the origin of a particular topic or event. An eyewitness account of a traffic accident is an example of a primary source.
Tertiary education (higher education, or post-secondary education) is the educational level following the completion of secondary education. The World Bank defines tertiary education as including universities , colleges , and vocational schools . [ 1 ]