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Direct linkMacrakis, Kristie; Bell, Elizabeth K.; Perry, Dale L.; Sweeder, Ryan D. – Journal of Chemical Education, 2012
By modifying secret writing formulas uncovered from the archives of the East German Ministry of State Security (MfS or Stasi), a novel general chemistry secret writing laboratory was developed. The laboratory combines science and history that highlights several fundamental chemical principles related to the writing. These include catalysis, redox…
Descriptors: Foreign Countries, Higher Education, Interdisciplinary Approach, History
Mirholm, Alexander; Ellervik, Ulf – Journal of Chemical Education, 2009
We describe the use of acrylic tanks (400 x 450 x 27 mm) for visualization of chemical demonstrations in aqueous solutions. Examples of well-suited demonstrations are oscillating reactions, pH indicators, photochemical reduction of Lauth's violet, and chemoluminiscent reactions. (Contains 1 figure.)
Descriptors: Chemistry, Science Instruction, Demonstrations (Educational), Scientific Principles
Plummer, Julia D. – Journal of Research in Science Teaching, 2009
The National Science Education Standards [National Research Council (1996) National science education standards. Washington, DC: National Academy Press] recommend that students understand the apparent patterns of motion of the sun, moon and stars by the end of early elementary school. However, little information exists on students' ability to…
Descriptors: Scientific Principles, Motion, Visual Environment, Grade 2
