Journal Articles: 8 results
Mole City: A Stoichiometric Analogy  Addison Ault
Offers an analogy to illustrate one of chemistry's most fundamental concepts and skills.
Ault, Addison. J. Chem. Educ. 2006, 83, 1587.
Assessing the Effect of Web-Based Learning Tools on Student Understanding of Stoichiometry Using Knowledge Space Theory  Ramesh D. Arasasingham, Mare Taagepera, Frank Potter, Ingrid Martorell, and Stacy Lonjers
This paper reports a comparative study using knowledge space theory (KST) to assess the impact of a Web-based instructional software program on students' understanding of the concept of stoichiometry. The software program called Mastering Chemistry Web (MCWeb) allows students to practice problems that emphasize the development of molecular-level conceptualization and visualization, analytical reasoning, and proportional reasoning, as well as learning to recognize and relate different representations in chemistry. The experimental design compared students in two sections taught by the same instructor. One section used the MCWeb instructional software as homework (MCWeb group) while the other section used text-based homework (non-MCWeb group, control).
Arasasingham, Ramesh D.; Taagepera, Mare; Potter, Frank; Martorell, Ingrid; Lonjers, Stacy. J. Chem. Educ. 2005, 82, 1251.
Stoichiometry |
Student-Centered Learning
Cross-Proportions: A Conceptual Method for Developing Quantitative Problem-Solving Skills  Elzbieta Cook and Robert L. Cook
This paper focuses attention on the cross-proportion (C-P) method of mathematical problem solving, which was once widely used in chemical calculations. We propose that this method regain currency as an alternative to the dimensional analysis (DA) method, particularly in lower-level chemistry courses. In recent years, the DA method has emerged as the only problem solving mechanism offered to high-school and general chemistry students in contemporary textbooks, replacing more conceptual methods, C-P included.
Cook, Elzbieta; Cook, Robert L. J. Chem. Educ. 2005, 82, 1187.
Learning Theories |
Stoichiometry |
Chemometrics |
Student-Centered Learning
Learning Stoichiometry with Hamburger Sandwiches  Liliana Haim, Eduardo Cortón, Santiago Kocmur, and Lydia Galagovsky
Simple and understandable activities involving the manufacturing of hamburgers can be used as an analogy for stoichiometric concepts and calculations.
Haim, Liliana; Cortón, Eduardo; Kocmur, Santiago; Galagovsky, Lydia. J. Chem. Educ. 2003, 80, 1021.
Stoichiometry |
Enrichment / Review Materials
How to Say How Much: Amounts and Stoichiometry  Addison Ault
Pictorial representation of the ways by which chemists describe an amount of material, and a systematic way to create a visual representation or "map" for solving stoichiometry problems.
Ault, Addison. J. Chem. Educ. 2001, 78, 1347.
A simple quantitative synthesis: Sodium chloride from sodium carbonate  Gold, Marvin
A stoichiometry experiment that fulfills the following: satisfactory precision, no need for a fume hood, is interesting and instructive, and the products can be discarded in the sink.
Gold, Marvin J. Chem. Educ. 1988, 65, 731.
Analogies that indicate the size of atoms and molecules and the magnitude of Avogardo's number  Alexander, M. Dale; Ewing, Gordo J.; Abbott, Floyd T.
Three analogies to help students imagine the sizes of atoms, molecules, and Avogadro's number.
Alexander, M. Dale; Ewing, Gordo J.; Abbott, Floyd T. J. Chem. Educ. 1984, 61, 591.
Atomic Properties / Structure |
Molecular Properties / Structure |
Coffee, coins, and limiting reagents  McMinn, Dennis
Analogy regarding stoichiometry and limiting reagents.
McMinn, Dennis J. Chem. Educ. 1984, 61, 591.