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Direct linkKnutson, Cassandra M.; Hilker, Abby P.; Tolstyka, Zachary P.; Anderson, Constance B.; Wilbon, Perry A.; Mathers, Robert T.; Wentzel, Michael T.; Perkins, Angela L.; Wissinger, Jane E. – Journal of Chemical Education, 2019
A versatile experiment is described for the high school and college laboratory setting based on the synthesis of biobased polymers prepared from inexpensive, renewable, and nonhazardous chemicals. Combinations of readily available citric acid, glycerol, and tapioca root starch are used to prepare three polymeric materials with different observable…
Descriptors: Secondary School Science, College Science, Chemistry, Science Experiments
Drouin, Pamela; Welty, David J.; Repeta, Daniel; Engle-Belknap, Cheryl A.; Cramer, Catherine; Frashure, Kim; Chen, Robert – Science Scope, 2006
In this article, the authors present a classroom experiment that was developed to introduce middle school learners to the carbon cycle. The experiment deals with transfer of CO[subscript 2] between liquid reservoirs and the effect CO[subscript 2] has on algae growth. It allows students to observe the influence of the carbon cycle on algae growth,…
Descriptors: Research Design, Middle School Students, Science Experiments, Secondary School Science
Peer reviewedHuebner, J. S.; Humphries, J. T. – American Journal of Physics, 1974
Describes the use of storage oscilloscopes in five physics experiments, in lecture demonstrations, and in improved measurement techniques. (GS)
Descriptors: Biology, College Science, Data Collection, Electronic Equipment
