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Direct linkWajrak, Magdalena – School Science Review, 2011
Natural arsenic salts are present in all waters, with natural concentrations of less than 10 parts per billion (ppb). Unfortunately, there is an increasing number of countries where toxic arsenic compounds in groundwater, which is used for drinking and irrigation, have been detected at concentrations above the World Health Organization's…
Descriptors: Water, Foreign Countries, Safety, Science Equipment
Siddique, Mohammad Nure Alam – Asia-Pacific Forum on Science Learning and Teaching, 2008
This paper presents part of the findings from a comparative study on existing and proposed science curricula of grades IX-X in Bangladesh. It aims to explore relevant research to find out what ideas about science are recommended to include in school science curriculum, and then to compare the existing and proposed curricula in terms of ideas about…
Descriptors: Textbooks, Foreign Countries, Comparative Analysis, Science Curriculum
