Area of Circles


What's Included

  • Smart Notebooks Presentation
  • Interactive Excel File
  • Activ Inspire Flipchart
  • Lesson Plan
  • Microsoft PowerPoint Presentation

Area of Circles

Students are guided though the derivation of the Area of a Circle formula by approximating a circle from its sectors.  Once the formula is derived there are several examples provided for the teacher to model its application in calculating the area of a circle and semi-circle. 
Differentiated Learning Objectives
  • All students should be able to derive the formula for the area of a circle.
  • Most students should be able to derive and apply the formula for the area of a circle.
  • Some students should be able to calculate the area of a semi-circle.
Free Downloads and Links
Video Demonstration
Scheme of Work Link

Perimeter and Area - Foundation

Area of 2D Shapes - Higher

Maths lessons to engage and inspire.

You may also like...

Area of Circles Problems

The lesson is intended to consolidate applying the area of circle formula to solve complex problems.  To extend ...

Area of Rectangles

Students learn how to find the area of a rectangle first by counting, then repeated addition, basic multiplicati...

Circumference of Circles

Students are taken through the process of discovering the relationship between the radius, diameter and circumfe...

Area of Triangles

By considering a right angled triangle as half a rectangle the students are guided through deriving the formula ...

Mr Mathematics Blog

How to Draw a Venn Diagram to Calculate Probabilities

There are three common ways to organise data that fall into multiple sets: two-way tables, frequency diagrams and Venn diagrams.  Having blogged about frequency diagrams before I thought I would write about how to draw a Venn Diagram to calculate probabilities. Recapping Two-Way Tables This activity works well to review two-way tables from the previous […]

Calculations with Percentages

Students learn how to find a percentage of an amount using calculator and non-calculator methods.  As learning progresses they use decimal multipliers to find a percentage change and calculate a simple interest in financial mathematics. This topic follows on from Fractions, Decimals and Percentages and takes place in Year 8 Term 5. Calculations with Percentages […]

Proving Geometrical Relationships using Algebra

Back in May 2017 maths teachers around the country eagerly awaited the first exam for the new GCSE Mathematics syllabus.  Proving geometrical relationships using algebra featured at grade 9.  In Paper 1 of Edexcel’s test paper the last question of the higher tier looked like this. Edexcel wrote about student’s performance on this question in […]