The Birthday Problem

Roll the dice with this multimedia math activity on probability. After first viewing a series of three short videos explaining probability, independent events, and dependent events, young mathematicians complete a set of practice...

How likely is it to draw a blue marble? Pupils find the likelihood of events and connect that to the probability of the event. They find the probabilities of simple events and show their probabilities on a scale.

The probability of learning from this lesson is high! Learners calculate probabilities as numbers and as decimals. They see how to use a complement to find a probability and even try a simple geometric probability problem.

Statistically, practicing this packet completely helps young mathematicians do well on the test. The packet is adaptable to many grade levels as it includes basic probability and goes up to data analysis with mean, median, and mode. 

This lesson is a bit more challenging, but Sal provides an excellent step-by-step explanation. He uses of different colors to help learners follow the process for solving this problem. As he solves one problem, he poses another and...

Multiple worked examples and clear explanation of arithmetic steps really make this presentation on conditional probability stand out.  Specifically, an emphasis on the reasoning behind the calculations helps young statisticians develop...

Video finding the probability that at least two people in a group of 30 have the same birthday by calculating the probability of the complement. [13:16]

Get your class on target with probability using an exciting resource. The interactive presents three square dartboards with different target areas, which are combinations of square units. Pupils determine the probabilities of randomly...

An interactive uses a candy store to involve the pupils in conditional probabilities. Learners determine probabilities as customers purchase different types of candies and the stock decreases.

An interactive provides a model to visually represent the formula for the probability of an outcome. Given 10 numbered color cubes, pupils arrange them on the top and bottom shelf to represent the probability fraction. The learners use...