Key Stage 3

Showing 129–144 of 150 results

Key Stage 3

Subtraction with Decimal Numbers

How to use the column method to perform a subtraction with decimal numbers.  More able students add and subtract...

Subtraction with Negative Numbers

Students learn how to subtract with positive and negative numbers on a number line and using written methods.  M...

Surface Area of Cubes and Cuboids

Students learn how to find the surface area of cubes and cuboids using nets and 3D drawings.  As learning progre...

Surface Area of Prisms

Students use net drawings and 3D representations to calculate the surface area of prisms made from parallelogram...

Tessellation with Shapes

Students learn about tessellation with shapes.  More able students consider the angles of each shape.  Less able...

Total Surface Area of Cylinders

Students learn how to calculate the total surface area of cylinders using net drawings.  As learning progresses ...

Translating Shapes using Vectors

Students learn about translating shapes using vectors. As learning progresses they move from performing translat...

Understanding Set Notation

Students learn how to find the union and intersection of elements using basic set notation.  As learning progres...

Using Graphs to Solve Linear Equations

Students learn about using graphs to solve linear equations. Learning progresses from solving equations where th...

Using Parabolas to Solve Quadratic Equations

Students learn how to find the solutions to a quadratic equation using graphs.  Learning progresses from solving...

Using Real Life Graphs

Students learn how to model situations or procedures using real life graphs.  Learning progresses from drawing t...

Using Scientific Calculators

Students practise using scientific calculators to solve problems involving brackets, powers and the order of ope...

Vertically Opposite Angles and Around a Point

Building on angles on a straight line students learn how to recognise vertically opposite angles and find angles...

Volume of a Cylinder

Students learn how to calculate the volume of a cylinder both in terms of pi and as a decimal to three significa...

Volume of Cubes and Cuboids

Students learn how to find the volume of cubes and cuboids using the area of the  cross-section and depth.  Lear...

Writing Expressions using Diagrams

Students learn about writing expressions using diagrams.  As learning progresses they create their own shapes fr...

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 […]