4.20 Quartiles Higher GCSE PowerPoint Lesson

In this 23-slide lesson, student will order data sets, identify the lower quartile (Q1), median (Q2), and upper quartile (Q3), and calculate the interquartile range (IQR). Pupils will then use quartiles to compare two data sets, making statements about spread, consistency, and typical values. Emphasis is placed on clear method, accurate ordering, and correct interpretation of results in context. Great as a lesson preceding box plots and cumulative frequency.

Note this lesson is for the higher tier only.

The lesson includes:

• Clear, guided examples

• Discussion opportunities from Think, Pair, Share

• Mini whiteboard section to check understanding and clarify misconceptions

• Two structured tasks to practise key skills

• Challenge activity to extend and deepen learning

Perfect for engaging learners while reinforcing essential data and statistics concepts.