Show your students some candy that comes in two different colors. For instance, you could use blue and red M&Ms.
Count a certain number of one color of the candy and place it into a container that you cannot see through. Count a certain amount of the other color and place it in the jar as well.
Ask your students what the likelihood would be for a person to draw out a red piece of candy or a blue piece of candy. Explain that this depends on the probability of the situation.
Calculate the probability of drawing either color candy. For instance, consider a container in which you added 10 red M&Ms and 20 blue M&Ms. The total number of candies is 30. To find the probability of choosing a red piece of candy, create a fraction with 10 in the numerator and 30 in the denominator. This simplifies to one-third, which means that you have a one-in-three chance of drawing a red M&M. Write a fraction with 20 in the numerator and 30 in the denominator to find the probability of drawing a blue piece of candy. Since 20 divided by 30 simplifies to two-thirds, you have a two-in-three chance of drawing a blue M&M.
Determine probability percentages by dividing your numerators by your denominators. In this example, you would divide one by three to get 0.33. Multiply this times 100, and you have a 33 percent chance of drawing a red M&M. You would also divide two by three to get 0.66. Multiply this by 100 and you have a 66 percent chance of drawing a blue M&M.
Allow your students to draw out a piece of candy. After each child draws a piece of candy and you record the result, have the child put the candy back into the container so that the probability figures remain consistent. Once everyone has drawn a piece of candy, compare your results to the probability percentages.