Probability - introduction
This is an introductory video lesson on probability. I explain the definition of simple probability where all outcomes are equally likely as P = (number of favorable outcomes/number of all outcomes). Then I go through several examples, such as choosing marbles from a bag or rolling a die. This lesson suits 7th grade / middle school math or anyone who needs to learn the basic concept of probability.
See also
Math Mammoth Grade 7 curriculum