This is a complete lesson on calculating probabilities that looks at how to work out numerical probabilities for an event happening or not happening. The lesson is designed with the new GCSE specification in mind.

- To be able to write probabilities as fractions, decimals or percentages.
- To understand 1 – p as the probability of something not happening.

This pack is designed for GCSE higher or foundation tier students. It could also be used with Key Stage 3 students.

Included in this download are the following:

- Full lesson plan for the ‘Calculating Probabilities’ lesson, including introduction, teaching content, individual activities, plenary and suggested support and extension activities
- Probabilities Mindmap
- Student Worksheet on Calculating Probabilities
- Vote With Your Feet
- Probability Fact Sheet
- Complete Solutions to all Questions

This is the second lesson in the ‘Probability’ unit of work (foundation tier) and also the first lesson in the ‘Probability’ unit of work (higher tier).

The Probability (Foundation Tier) unit is **available as a pack** including homework activities and a unit assessment. The other lessons in the unit are:

**Lesson 1 – Likelihood & The Probability Scale****Lesson 3 – Experimental & Theoretical Probabilities****Lesson 4 – Relative Frequency & Expected Frequency****Lesson 5 – Sample Space Diagrams****Lesson 6 – Probabilities of Independent Events****Lesson 7 – Probability Trees (With Replacement)****Lesson 8 – Probability Trees (Without Replacement)**

The Probability (Higher Tier) unit is also **available as a pack** with homework activities and a unit assessment. The other lessons in this unit are:

**Lesson 2 – Experimental & Theoretical Probabilities****Lesson 3 – Relative Frequency & Expected Frequency****Lesson 4 – Sample Space Diagrams****Lesson 5 – Probabilities of Independent Events****Lesson 6 – Probability Trees (With Replacement)****Lesson 7 – Probability Trees (Without Replacement)****Lesson 8 – Conditional Probability****Lesson 9 – Probability & Venn Diagrams**