Yale University
Yale University: Probability Models
A general description of probability, probability rules, and Venn diagrams.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math; Introduction to Probability
A good introduction to concepts in probability, this page also gives a great definition of sample space. Scroll down halfway to find sample space.
CK-12 Foundation
Ck 12: Probability: Conditional Probability Grade 8
[Free Registration/Login may be required to access all resource tools.] Recognize and apply the definition of conditional probability to find probabilities in finite sample spaces.
Khan Academy
Khan Academy: Probabilities of Compound Events
Practice using sample space diagrams to find probabilities. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Interactive Geometry: 11.1 Descriptions of Events
Learn about different types of events: experiments, events, sample spaces, and outcomes.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Topic Summaries: Probability
The topic summary outlines probability. Some topics reviewed are sample space, independent events, conditional probability, and theoretical probability. The resource consists of definitions, notes, and examples.
Scholastic
Scholastic: Study Jams! Math: Probability: Tree Diagrams
This site provides great practice on the concept of tree diagrams. Students can first learn about the topic by watching a step by step instruction video that also points out areas of concern. Finally, students can practice their...
CK-12 Foundation
Ck 12: Probability: Venn Diagrams
[Free Registration/Login may be required to access all resource tools.] Covers the definition of Venn diagrams and how to use them.
OER Commons
Oer Commons: Fundamental Counting Principle
Students will continue to apply their understanding of compound independent events. They will calculate probabilities and represent sample spaces with visual representations.
Interactive Mathematics
Interactive Mathematics: Probability of an Event
The definition and properties of probability are given along with examples of how to find the probability of an event. Links are included for interactive probability games involving birthdays and the lottery.
Richland Community College
Richland Community College: Introduction to Probability
This site from Richland Community College provides an overview of probability including a list of probability rules. Several examples using dice are included.
Alabama Learning Exchange
Alex: Making Compound Probability Simple
This lesson plan asks students to find all the possible outcomes from a compound event. Students will create a powerpoint, booklet, or foldable to demonstrate their understanding of the methods for solving compound events. It also...
National Council of Teachers of Mathematics
The Math Forum: Drexel University: Boy or Girl?
Dr. Math explores the probability of the children in families being boys or girls. A look at the mathematics involved in each situation is included.
Texas Instruments
Texas Instruments: A Simulation
In this activity, students use the CellSheet Application to simulate a probability event. This activity simulates an experiment performing a survey. Students can see that the results of a random survey can vary widely if a small sample...
Texas Instruments
Texas Instruments: Numb3 Rs: Birthday Surprise
Based off of the hit television show NUMB3RS, this lesson introduces students to the Birthday Problem, in which one calculates how many people must be in a group so that a birthday is "probably" shared. The solution to this problem is...
Illustrative Mathematics
Illustrative Mathematics: S Cp and Md: Return to Fred's Fun Factory (With $.50)
The task is intended to address standards regarding sample space, independence, probability distributions and permutations/combinations. Aligns with S-CP.A.1.
Oswego City School District
Regents Exam Prep Center: Mutually Exclusive & Independent Events
The somewhat tricky differences between mutually exclusive, non-mutually exclusive, independent, and dependent events are defined here. Common items such as coins, colored cubes, and a deck of cards are all part of the easy-to-understand...