Activity Description Learn about sampling with and without replacement by randomly drawing marbles from a bag. Parameters: Number and color of marbles in the bag, replacement rule.

Shodor Interactivate utilizes JavaScript technology, you must enable it to effectively use our site.

If you wish to leave JavaScript disabled, you may attempt to view the activity. Here is some additional information about this activity that may not be accessible without JavaScript.

Marbles

Place in mathematics curriculum:

• introduce the notions of chance and probability
• motivate the notion of conditional probability
• motivate the notion of sampling with and without replacement
• motivate the notion of random numbers

This activity allows the user to emulate pulling marbles out of a bag under various conditions. This activity would work well in groups of two or three for about twenty-five to thirty minutes if you use the exploration questions and ten to fifteen minutes otherwise.

Preparations for this activity:

• give implicit directions on what they are to do. For example, "Today we are going to experiment with conditional probability, theoretical probability, experimental probability,... after we have played with the applet we will try to answer the exploration questions..."
• answer the question "What is conditional probability?"
• discuss graphical representations of data