Challenge Question
What is the probability of picking a red counter from a bag if you know the probability of not picking it is 0.65?
Learning Targets
Beginning
To be able to calculate the probability of outcomes of single events and understand that the probability scale runs from 0 to 1.
To be able to calculate the probability of an event happening when you know the probability that the event doesn’t happen and knowing when you cannot use this rule.
Developing
To be able to calculate all the outcomes of two independent events (such as tossing a coin & throwing a dice) and calculate probabilities from lists or tables
Mastering
To be able to use a tree diagram to show all possible combinations. To be able to solve problems using tree diagrams.
Resources
Beginning
Simple probability examples:
Stick on Maths - Probability (open in Keynote)
Stick on Maths - Probabilities add to 1 (open in Keynote)
Developing
Mastering
Introduction to tree diagrams
Solving problems with tree diagrams
