Key Stage 3

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Key Stage 3

Scale Drawings

Students learn how to draw diagrams to a scale using ratio notation.  As learning progresses they learn how to c...

Scale Drawings of Bearings

Using their knowledge of triangles students learn how to construct scale drawings of bearings.  As learning prog...

Scatter Graphs and Correlation

Students learn how to describe relationships between two variables and illustrate them using scatter graphs. Sca...

Setting up and Solving Equations

Students learn how to set up an equation using written descriptions and known geometrical facts.  Once the equat...

Sharing in a Given Ratio

Students learn how to divide a quantity into two or more parts when given a ratio.  As learning progresses stude...

Simplifying Expressions by Collecting Like Terms

Students learn about simplifying expressions by collecting like terms.  As learning progresses they consider a m...

Simplifying numbers written in index form

Students learn how to use the multiplication and division rules to simplify numbers written in index form.  As l...

Solving an Equation with Function Machines

Students learn about solving an equation with function machines.  More able students can use the balance method ...

Solving Equations with Brackets

Students learn how to solve linear equations involving brackets and fractions using the balance method.The s...

Solving Equations with the Unknown on Both Sides

Mathematics lesson where students learn about solving equations with the unknown on both sides using the balance...

Solving One Step Equations

Students learn how to solve a simple equation using the balance.  To do this they are taught how opposite functi...

Solving Two Step Equations

Using the balance method students are taught how to solve two-step equations involving multiplications and divis...

Square Numbers and Square Roots

Students learn how to calculate square numbers and square roots.  They are taught to use visualisation, written ...

Substituting Numbers into Expressions

Students learn about substituting numbers into expressions.  Using the order of operations they are taught how t...

Substituting Numbers into Formulae

Students learn about substituting numbers into formulae using the order of operations.  As learning progresses s...

Subtracting Fractions using a Fraction Wall

Students learn how to subtract fractions with using equivalent fraction diagrams.  As learning progresses more a...

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 […]