Key Stage 3

Showing 49–64 of 150 results

Key Stage 3

Factor Pairs of Numbers and Terms

Students learn how to find all the factor pairs of numbers and terms.  More able are taught to find the factors ...

Factorising Expressions into a Pair of Brackets

Students learn how to factorise an algebraic expression into a pair of brackets using the highest common factor....

Finding any length of a Right-Angled Triangle

Key stage 3 mathematics for using Pythagoras' Theorem to calculate any length of a right-angled triangle.   Lea...

Finding Percentages without a Calculator

Students learn how to calculate a percentage of an amount  using either 10% or working with equivalent fractions...

Finding Prime Factors

Students learn about finding prime factors of a number.  This lesson builds on understanding what prime numbers ...

Finding Prime Numbers

Students learn about finding prime numbers using factor pairs and the Sieve of Eratosthenes.  Throughout the les...

Finding the Area of a Circle

Students learn how a circle can be formed into a parallelogram and rectangle so the area is derived as A =πr2.  ...

Finding the Area of a Rectangle

Students learn about finding the area of a rectangle.  They progress from counting the squares inside and multip...

Finding the Area of a Triangle

Students practice finding the area of a triangle.  As the lesson progresses students learn how to use the formul...

Finding the Circumference of a Circle

Students learn about finding the circumference of a circle as a multiple of π and as a decimal correct to 3 sign...

Finding the Highest Common Factor

Students learn about finding the highest common factor of numbers and terms.  More able student learn how to fin...

Finding the nth Term of a Sequence

Students learn about finding the nth term of a sequence.  During the lesson they are taught how to break a seque...

Finding the Original Amount – Percentage Changes

Students learn how to calculate the original amount after a simple percentage change.  Learning progresses from ...

Fractions and Decimal Numbers

Students learn how to convert between fractions and decimal numbers using place value and equivalent fractions. ...

Horizontal and Vertical Straight Line Graphs

Students learn how to plot and find the equation of horizontal and vertical straight line graphs.  As learning p...

How to Calculate the Mean Average

Students learn how to calculate the mean average from data in a list.  Later in the lesson they compare data set...

Mr Mathematics Blog

How to Simplify Surds

When learning how to simplify surds students need to understand the difference between a rational and irrational number. Rational numbers include integers and terminating and repeating decimals. They can be written as a fraction with both the numerator and denominator as integers. An irrational number is a number which, in its decimal form does not […]

Sharing an Amount to a Given Ratio

There are three common methods for sharing an amount to a given ratio.  Depending on the age group and ability range I am teaching I would choose one approach over the other two. The three methods are: Using fractions Unitary method Using a table In this blog I will demonstrate each of the three methods […]

Plotting Scatter Graphs and Understanding Correlation

To introduce plotting scatter graphs and understanding correlation I ask students to think about the relationships between different variables and to describe how they might be related. Here's my starter activity which students discuss in pairs then present to me on mini-whiteboards. When the students have had time to discuss the matching pairs we talk […]