This video introduces limits used in calculus. A limit is the value of the expression as the expression approaches. This introduction gives examples that show that limits are not as simple as just evaluating a function. (07:38)

From brightstorm.com, produced by Brightstorm, Inc.

An instructor uses a whiteboard and a discontinuous function to demonstrate the concept of a limit. He uses the point where the function is undefined and a table of values to determine the value of the limit as it approaches that point.
This video... would be most useful for a student that has already been introduced to the concept and needs a review or reminder.[more]

Mr. Khan offers this video of the intuition (but not a proof) of the Squeeze Theorem. Salman Khan is the recipient of the 2009 Microsoft Tech Award in Education. (07:36)

In this lesson you will learn about evaluating limits by substituting
values into the expression as well as what notation denotes a limit (and how to read and interpret the notation). Taught by Professor Edward Burger, this lesson was selected from... a broader, comprehensive course, Calculus.[more]

This is a clip from a larger one. In the clip, the instructor briefly discusses how to define a limit. The instructor uses a paper and marker while his image appears in the right corner. (02:54)

When dealing with a function, you start with one input number and then you perform at least one operation on it, based on the rule of the function, and you get a resulting output number. In this interactive, you will look at both the input numbers an...d the corresponding output numbers organized in the Before/After chart to find the rule of the function. First select the operation ( +, ─, x , / ) and then select the number. When you know the rule of the function, you will then be able to predict the output for any other number you choose as an input.[more]

This video gives a step-by-step example of how to solve a one-sided limit both graphically and by substituting infinitely small and large numbers for x. (09:59)

A Continuous Function is defined in terms of limits and various discontinuities are discussed. Animated graphics on white board. The explanation is clear and understandable. (03:34)

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