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Listed under:  Mathematics  >  Statistics and probability  >  Probability
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Probability

This is a teacher resource for probability consisting of a website and a PDF with identical content. It contains an introduction to probability, a discussion of random procedures, a formal approach to events and event spaces and probability axioms, conditional probability and independence, and the laws of probability.

Interactive

Experimental probability

This is an interactive resource that enables students to conduct virtual probability experiments using a spinner or a pair of dice. The student can manipulate the relative sizes of the different coloured segments of the spinner or the numbers on the faces of the dice to investigate the effect of these changes on probability. ...

Video

Birthday probability

What is the probability there are at least two people in your class who have the same birthday? If you have at least 23 people in your class, the chances are good. Find out the maths behind this theory.

Video

The probability of finding matching socks

Check out this probability puzzle that requires you to weigh all the possibilities. Pick the most likely outcome when confronted with a drawer full of loose, unpaired socks! How did Eric come up with a matching pair?

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Probability and the gambler's fallacy

Mathematician Lily Serna visits Luna Park to explain a great probability pitfall. She shares a century-old tale from Monte Carlo casino, and then she puts its lesson to the test. If you flip a coin and it lands on heads three times in a row, what result would you predict for the next flip? Find out why intuition might land ...

Online

Introduction to probability

This is a website designed for both teachers and students in year 5, and addresses components of the probability topic. It is particularly relevant for discussing chance experiments where the probability of events is equally likely and for describing those events using fractions. There are pages for both teachers and students. ...

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TIMES Module 13: Statistics and Probability: chance, year 8 - teacher guide

This is a 15-page guide for teachers. It continues the development of probability. A careful consideration of outcomes and equally likely outcomes is undertaken. In year 8, students see that these are a special case of finding probabilities of events by summing probabilities of the disjoint (or mutually exclusive) outcomes ...

Video

Probability and the birthday paradox

Even when a maths problem seems simple – for example, the chance of two people sharing a birthday – the maths can run counter to our human intuition. Mathematician Lily Serna poses a maths problem to the Clovelly Bowling Club: how many people do you need to gather to get a 50 per cent chance of any two people in that group ...

Online

TIMES Module 12: Statistics and Probability: chance, year 7 - teacher guide

This is a 13-page guide for teachers. It continues the development of probability. A careful consideration of outcomes and equally likely outcomes is undertaken. In year 7, students revisit simple situations with a clear and easily listed number of possible outcomes that can, or may, be assumed to be equally likely. In ...

Interactive

The vile vendor: go figure

This tutorial is suitable for use with a screen reader. It explains how the use of simple words can describe the likelihood of everyday events. How likely is an event: certain, likely, equal chance, unlikely or certainly not? Answer some sample questions using these words and then build your own examples. This learning ...

Interactive

The foul food maker: questions 1

Use a vending machine to get an awful meal such as fly soup, worm pasta or yucky duck. The machine serves a meal randomly from four slots. Work out the likelihood of getting each type of meal. Then choose a matching probability word: impossible, unlikely, equal, likely or certain. Run simple probability experiments. Compare ...

Interactive

The vile vendor: questions

Use a vending machine to get a vile-flavoured drink such as cabbage, smelly sock or rusty nail. The machine serves a can of drink randomly from four slots. Work out the likelihood of getting each flavour. Then choose a matching probability word: impossible, unlikely, equal, likely or certain. Move on to filling the slots ...

Online

TIMES Module 11: Statistics and Probability: chance, year 6 - teacher guide

This is a 17-page guide for teachers. It continues the development of probability. A careful consideration of outcomes and equally likely outcomes is undertaken. Experiments involving known probabilities are considered and what is observed is compared with what is expected. This is carried out with both small and large ...

Interactive

The slushy sludger: questions

Use a vending machine to squirt coloured 'slushies' into ice-cream cones. Work out which 'sludge events' are possible and then choose a matching probability word.

Online

TIMES Module 15: Statistics and Probability: chance, year 10 - teacher guide

This is a 15-page guide for teachers. This module continues the development of probability. In year 10, students consider situations involving two or three stages or two or three variables. In the special case of two- or three-step chance experiments, they assign probabilities to outcomes in situations involving selections ...

Online

TIMES Module 14: Statistics and Probability: chance, year 9 - teacher guide

This is a 19-page guide for teachers. This module continues the development of probability. A careful consideration of outcomes and equally likely outcomes is undertaken. In year 9, students consider situations involving two stages or two variables, including the special case of what are sometimes called two-step chance ...

Interactive

Spinners: explore

Test a coloured spinner (dial with pointer) with three equal-sized sectors. Use a tool to build more spinners. Choose up to twelve equal-sized sectors. Choose one of three colours for each part of a spinner. For example, make a three-colour spinner with six red sectors, four yellow sectors and two orange sectors. Test the ...

Interactive

The slushy sludger: go figure

This tutorial is suitable for use with a screen reader. It explains how the use of simple words can describe the likelihood of everyday events. Will an event happen: yes, no or maybe? Answer some sample questions using these words and then build your own examples. This learning object is one in a series of three objects.

Interactive

Mystery spinner: challenge

Look at results in a frequency graph compiled after testing an unseen spinner. Work out the likely proportions of colours in the mystery spinner. Use a tool to build a new spinner (a dial with a pointer). Choose up to five equal-sized sectors. Fill the sectors with up to five colours. For example, make a five-part spinner ...

Video

What are the chances?

Do you know what chance is? It's the probability or the likelihood of something happening. Watch this video as Grace explains the probability of picking a red marble out of a bowl. What's the probability of picking a green marble?