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Liu, Jun; Sha, Sha; Zheng, Qinghua; Zhang, Wei – International Journal of Distance Education Technologies, 2012
Assigning difficulty level indicators to the knowledge units helps the learners plan their learning activities more efficiently. This paper focuses on how to use the topology of a knowledge map to compute and rank the difficulty levels of knowledge units. Firstly, the authors present the hierarchical structure and properties of the knowledge map.…
Descriptors: Foreign Countries, Knowledge Level, Difficulty Level, Educational Technology
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Bangs, Joann – American Journal of Business Education, 2009
One of the most important concepts being taught in principles classes is the idea of "thinking on the margin." It can also be one of the most difficult to get across. One of the most telling examples, according to this author, comes in trying to get students to learn the profit maximizing condition for perfectly competitive firms. She…
Descriptors: Classroom Environment, Classroom Techniques, Educational Principles, Educational Practices
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Ager, David J.; And Others – Journal of Chemical Education, 1986
Describes a program of demonstration experiments used to stimulate interest in chemistry, specifically aimed at increasing university chemistry enrollments. Discusses program goals, experiments, design criteria, and several caveats related to the development of such a program. (JM)
Descriptors: Chemistry, College Science, Demonstrations (Educational), Educational Experiments