Students learn that probability is the likelihood that a given event will happen, and probability can be found using the following ratio: (number of favorable outcomes) / (number of total outcomes). For example, the probability that the flip of a coi...n will come up heads is: (1 favorable outcome) / (2 possible outcomes), or 1/2. Note that probability can be written as a fraction (1/2), a decimal (0.5) or a percent (50%). Video is good quality and good for all students as a review or initial learning of the topic.[more]

Students learn that two events are dependent if the outcome of the first event affects the outcome of the second event. For example, taking a block out of a jar, then taking a second block out of a jar. And the probability of dependent events can be ...found by multiplying the probability of the first event times the probability of the second event. For example, if there are 4 blue blocks and 4 yellow blocks in a jar, the probability of taking a blue block out of the jar then a yellow block out of the jar is 4/8 times 4/7, or 16/56, which reduces to 2/7. The reason that the probability of taking a yellow block out of the jar is 4/7 rather than 4/8 is that a blue block has already been taken out, so there are only 7 blocks left in the jar. Video is good quality and good for all students as a review or initial learning of the topic.[more]

During this brief video, the instructor gives the basics of probability. He starts by using the probabilty of flipping a coin. Though the instructor says he discusses the 'basics', this video instruction should be supplemented with discussion prior t...o viewing. (01:41)[more]

Probability of compound events. The Addition Rule. Common Core Standard 457 S-CP.7 In this ten-minute video, Sal Khan of Khan Academy, uses playing cards and a Venn Diagram to continue his discussion of probability using computer software.

From pbslearningmedia.org, produced by Thirteen/WNET New York

In this video segment from Cyberchase, the CyberSquad is testing various games to decide if they are fair or not. Matt, Jackie and Lucky play a game called The Squares Game. They play it and then analyze the outcome to decide whether the game is fair.... (3:02)[more]

This lesson defines probability and explains the concept with this example," If a die is rolled, what is the probability of rolling an even number?" Students are shown another example and then given questions to answer on probability. ( This link i...s for an interactive activity and may take a few minutes to load.)[more]

In this video they define probability as the likelihood of an event taking place. Discover the definition of a probability in math with tips from a mathematics tutor in this video. Examples of some everyday probabilities occuring is discussed. Then h...e a coin and spin as examples of probability. Video is good quality and good for all students as a review or initial learning of the topic.[more]

In math, a simple way of thinking about probability is the chance of something happening against the chance of it not happening.
The expert in this video is Steve Jones uses a white board to demonstrate this concept.

In this video learn how to compute Binomial probabilities, cumulative probabilities, and inverse cumulative probabilities. Examples are shown of how to solve probability.

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