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American Association for the Advancement of Science (1993). Benchmarks for science literacy. New York: Oxford University Press. ISBN 9780195089868. Bruton, Sheila; Ong, Faye (2000). Science content standards for California public schools : kindergarten through grade twelve (PDF). Sacramento, Calif.: Dept. of Education. ISBN 978-0-8011-1496-0
Science is a universal subject that spans the branch of knowledge that examines the structure and behavior of the physical and natural world through observation and experiment. [9] Science education is most commonly broken down into the following three fields: Biology, chemistry, and physics.
Ninth grade (also 9th grade or grade 9) is the ninth or tenth year of formal or compulsory education in some countries. It is generally part of middle school or secondary school depending on country. Students in ninth grade are usually 13-15 years old, but in some countries are 15–16.
[9] Originally, the "C" in CK-12 stood for "connect", indicating that the material was the missing connection in K-12 education. Subsequently, it took on a more open meaning, variously standing for "content, classroom, customizable, connections, collaboration". [10] In 2010, NASA teamed up with CK-12 to produce physics-related resources. [11]
The National Science Education Standards (NSES) [1] represent guidelines for the science education in primary and secondary schools in the United States, as established by the National Research Council in 1996. These provide a set of goals for teachers to set for their students and for administrators to provide professional development.
Note that neither the names nor the symbols used for the physical quantities are international standards. Some quantities are known as several different names such as the magnetic B-field which is known as the magnetic flux density , the magnetic induction or simply as the magnetic field depending on the context.
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Physics, as with the rest of science, relies on the philosophy of science and its "scientific method" to advance knowledge of the physical world. [44] The scientific method employs a priori and a posteriori reasoning as well as the use of Bayesian inference to measure the validity of a given theory. [ 45 ]