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Determining When a Limit does not Exist - Calculus | Socratic

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Overview:: This site contains a webpage discussing basic possible cases of when a limit of a function of a single variable would fail to exist. This site is basically like a discussion forum.
Type of Material:: Reference material.
Recommended Uses:: This site can be used for an in-class demonstration, self-study, or individual student practice for assignments or exams.
Technical Requirements:: All Browsers
Identify Major Learning Goals:: Develop a better understanding of limits and continuity for a function of a single variable.
Target Student Population:: Students in a Calculus I course.
Prerequisite Knowledge or Skills:: First semester of Calculus (concurrent Calculus I class).

Rating:
Strengths:: Definition of a limit of a function is, without a doubt, one of the most fundamental and important concepts in Calculus. This site allows the user to visually explore the possible situations when a limit of a function of a single variable would fail to exist. This site provides various cases when the limit does not exist. The site also offers an exploration question on the subject with a complete solution.
Concerns:: The page lacks interactivity.

Rating:
Strengths:: Typically, Calculus I students experience difficulties understanding the definition of limit. Therefore, the site can be used as a part of in-class demonstration or as a part of homework, or perhaps a self-guided activity. An exploration question is a helpful way to check the understanding of the material.

Rating:
Strengths:: The site is essentially one web page so there are no problems using it whatsoever.

Other Issues and Comments:: It would be great if the site could include practical examples or quizzes.
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