References

References
Aldridge, B.G. (1989, 12 May). Essential changes in secondary school science: Scope, sequence and coordination. Washington, DC: National Science Teachers Association.
Aldridge
Essential changes in secondary school science: Scope, sequence and coordination
1989
American Association for the Advancement of Science. (1989). Project 2061: Science for all Americans. Washington, DC: AAAS.
American Association for the Advancement of Science
Project 2061: Science for all Americans
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National Research Council. (1990). Fulfilling the promise: Biology education in the nation's schools. Washington, DC: NRC.
National Research Council
Fulfilling the promise: Biology education in the nation's schools
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National Research Council. (1992, November). National science education standards: A sampler. Washington, DC: NRC.
National Research Council
National science education standards: A sampler
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