In this six-minute GED Math video lesson we will learn how to determine both simple and compound probabilities. The video says is for GED students, but this is an excellent review for middle to high school grades. (05:50)

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.

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