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These are the Transum resources related to the statement: "Concepts of trial, outcome, equally likely outcomes, relative frequency, sample space (U) and event. The probability of an event A is P(A)=n(A)/n(U). The complementary events A and A' (not A). Expected number of occurrences".

Here are some specific activities, investigations or visual aids we have picked out. Click anywhere in the grey area to access the resource.

- Pin Drop Estimate the probability of a drawing pin landing point up from experimental data.
- Probability Basic probability questions in an online exercise.
- Probability Formulae Show that you know which formula (as given in the IB Formula Booklet) to use for each probability question. A drag and drop challenge.
- Snail Race Twelve snails have a race based on the sum of two dice. This is the teachers' version of the race simulation.
- Snail Race A race between 12 snails. Which snail is most likely to win? This is the students' version of the race simulation.
- The Maths of Gambling Gambling is never a good idea and this activity might help you understand the mathematics involved.
- Two Dice Possibility Space An interactive visual aid showing the possibility space obtained when throwing two dice

Here are some exam-style questions on this statement:

- "
*The following table shows the probabilities of winning certain prizes at a stall in Faulton Towers theme park. A prize is always given for every turn.*" ... more - "
*Derren thinks he is a mind reader and can tell what Paige is thinking. An experiment was conducted to test this.*" ... more - "
*At the Trantown annual Fayre there are a number of different sideshows designed to raise money for cancer research. Roger is looking after two of these, the lucky dip and the raffle.*" ... more - "
*The table shows the shoe sizes of 35 male teachers.*" ... more - "
*Aran, Betsy and Connor collect data about which way up a drawing pin will land if dropped from a fixed height. Here are their results.*" ... more - "
*During a demonstration for Year 10 pupils a biased coin in a computer simulation landed on heads 600 times.*" ... more - "
*Donna is in a class of 25 students, 5 of whom have a pet dog.*" ... more - "
*Piers wins one of the many prizes on offer in the school raffle but he does not yet know exactly what the prize is.*- The probability that a prize is something to eat is 0.3
- The probability that a prize is worth more than $10 is 0.2
- The probability that a prize is something to eat or worth more than $10 is 0.4

*Find the probability that the prize Piers wins is not both something to eat and worth more than $10 as Piers does not like expensive food.*" ... more - "
*A game at a fayre consists of a players throwing one dart at the board pictured below.**The probability of hitting each region and the points scored for hitting that region is given in this table.*" ... more

Click on a topic below for suggested lesson starters, resources and activities from Transum.

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