Histograms — Interactive Lesson (Ages 13–16)

Do your students plot frequency instead of frequency density? This 30-slide interactive lesson teaches histograms with unequal class intervals, from the key formula to worked examples.

Mastering Histograms at GCSE

Students learn the concept of a histogram and its role in displaying a data distribution, then the key formula: frequency density = frequency ÷ class width. They construct histograms from a table, interpret them by reading the class interval on the horizontal axis and the frequency density on the vertical axis, find missing frequencies or class intervals, and estimate the mean by using the midpoint of each class interval.

What’s Included

• 30-slide interactive lesson on histograms
• Learning objectives on constructing, interpreting and using histograms
• The key formula linking frequency, class width and frequency density
• Worked examples, including finding missing frequencies
• Ten fill-in-the-blank tasks plus quiz and sorting activities with instant feedback

Key Benefits for Students

• Makes frequency density and unequal class widths clear
• Covers both constructing and interpreting histograms
• Shows how to estimate the mean from a histogram
• Instant feedback on answer questions

Why Teachers Love It

• No prep — ready for whole-class teaching on an interactive whiteboard
• A long, structured lesson that can be split across sessions
• Self-marking questions support independent practice
• Suits teaching, revision and homework
• Targets one of the most commonly missed GCSE statistics topics

Love this? You’ll love…

• Cumulative Frequency — Interactive Lesson (KS4)
• Calculating Averages from a List — Interactive Lesson (Ages 14–16)
• Calculating Averages from Frequency Tables — Interactive Lesson (Ages 14–16)

A dependable addition to a GCSE statistics topic, giving students a clear method for a topic that regularly appears on higher papers. Secure understanding of frequency density here supports work on probability from histograms.

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FAQ

What year group is this for? Years 9–11 (ages 13–16), GCSE.

Does it cover unequal class intervals? Yes — it teaches frequency density for unequal class widths.

Is it self-marking? Yes, with instant feedback on the questions.