Problem solving with conditional probability
I can use my knowledge of conditional probability to solve problems.
Problem solving with conditional probability
I can use my knowledge of conditional probability to solve problems.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Probabilities may appear in unfamiliar contexts
- Probabilities may require a strong knowledge of converting between fractions, decimals and percentages
- Selecting an appropriate and efficient method for solving the problem comes from evaluating methods
- A clear, logical, structured argument is much easier to follow and understand
Keywords
Probability - The probability that an event will occur is the proportion of times the event is expected to happen in a suitably large experiment.
Exhaustive events - A set of events are exhaustive if at least one of them has to occur whenever the experiment is carried out.
Mutually exclusive - Mutually exclusive events have no outcomes in common.
Venn diagram - Venn diagrams are a representation used to model statistical/probability questions. Commonly circles are used to represent events.
Common misconception
Pupils may represent probabilities in the wrong position on the probability scale by miscounting the number of intervals required.
Before using any probability scale, it can be helpful to make a note of the sizes for each major and minor interval.
To help you plan your year 11 maths lesson on: Problem solving with conditional probability, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 11 maths lesson on: Problem solving with conditional probability, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 4 maths lessons from the Conditional probability unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions

$$x$$ -
0.2
$$y$$ -
0.25
$$z$$ -
0.9




Exit quiz
6 Questions




