Formulae

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Formulae

Changing the Subject of a Formula

Students learn about changing the subject of a formula using the balance method.  As learning progresses they us...

Substituting Numbers into Formulae

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

Writing Formulae

Students learn how to write mathematical formulae using written descriptions.  As learning progresses students b...

Substitution into Formulae

Students learn how to substitute known values into formulae using the order of operations and algebraic notation...

Rearranging Formulae by Factorising

Students learn how to change the subject of a formula by factorising and the balance method.  A treasure hunt ac...

Rearranging Formulae

Rearranging formulae is a key topic at GCSE.  Students learn how to use the balance method and order of operatio...

Kinematics Formulae

In this mathematics lesson students learn how to apply and manipulate various kinematics formulae to solve and m...

Mr Mathematics Blog

Solving Two Step Equations using the Balance Method

An equation is when one expression, or term, is equal to another.  To solve an equation means to find the value of the variable (represented by a letter) that makes the two expressions equal.  There are two types of equations for secondary school mathematics, linear and none-linear.  In this blog I write about how I […]

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 […]