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Qiu-ting Huang; Yi-dan Zuo; Zhu Zhu; Liu Yang; Zhong-qun Tian; Guo-kun Liu – Journal of Chemical Education, 2024
Nitrate is a crucial parameter for assessing water quality, owing to its dual function in ecological systems. These functions can be beneficial or detrimental depending on whether nitrate concentrations are low or high, respectively. The ultraviolet spectrophotometric method (standard as 4500-NO[subscript 3]--B) is a classic method for determining…
Descriptors: Organic Chemistry, Scientific Concepts, Laboratory Experiments, Laboratory Procedures
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Payadnya, I. Putu Ade Andre; Suwija, I. Ketut; Wibawa, Kadek Adi – Mathematics Teaching Research Journal, 2021
The research aimed to analyze the students' abilities in solving realistic mathematics problems using "What-If"-Ethnomathematics Instruments with content focused on plane and space materials. The "What-If"-Ethnomathematics instruments are instruments that enable educators to analyze various errors and obstacles experienced by…
Descriptors: Mathematics Skills, Problem Solving, Thinking Skills, Learning Strategies
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Xin, Yan Ping; Zhang, Dake – Journal of Educational Research, 2011
This article presents the authors' response to Asha K. Jitendra's Response to Xin and Zhang ("The Journal of Educational Research," 2009, Vol. 102, No. 6). The claim of "factual errors, including inappropriate quotes, misrepresentation of information, and inadequate scholarship in Xin and Zhang's text" are not justified. In this rejoinder, the…
Descriptors: Educational Research, Word Problems (Mathematics), Evaluation Methods, Teaching Methods
McCullough, Philip N.; Andrews, Grover J. – 1978
In the design and implementation of the Council on Postsecondary Accreditation's (COPA) Project to Develop Evaluative Criteria and Procedures for the Accreditation of Nontraditional Education, a taxonomy for the classification and determination of the nature of nontraditional institutions has been developed. The objective of the study was to…
Descriptors: Admission Criteria, Advanced Placement, Classification, College Curriculum