Interactive Lessons

Search over 850 fully planned, interactive, differentiated mathematics lessons designed to engage and inspire your students.

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Ages 16 +

Solving Equations with Radians

A-Level Mathematics: How to solve trigonometric equations using radians

Ages 16 +

Radians – Area of a Sector

A-Level Mathematics: How to find the area of a sector using radians.

Ages 16 +

Radians – Arc Length

A-Level Mathematics: How to find the arc length and perimeter of a sector using radians.

Ages 16 +

Introduction to Radians

A-Level Mathematics: How to convert between degrees and radians.

Ages 16 +

More Trigonometric Identities

How to prove more complex trigonometric identities.

Ages 16 +

Harmonic Identities

How to derive the harmonic identities using the various addition formulae.

Ages 16 +

Introduction to T-Formulae

How to derive and apply the t-formulae.

Ages 16 +

T-Formulae Identities

How to use the t-formulae to prove trigonometric identities.

Ages 16 +

T-Formulae – Solving Equations

How to use the t-formulae to solve trigonometric equations.

Ages 16 +

Solving Trigonometric Equations

How to use the double-angle formulae to solve trigonometric equations.

Ages 16 +

Modelling with Trigonometry

How to model real-life situations using trigonometry.

Ages 16 +

Double-Angle Formulae

How to derive and apply double-angle formulae.

Ages 16 +

Trigonometric Addition Formulae

How to apply the addition formulae to simplify trigonometric expressions.

Ages 16 +

Inverse Trigonometric Functions

How to sketch the functions arcsin, arccos and arctan.

Ages 16 +

Identities with Inverse Trigonometric Functions

How to prove complex trigonometric identities using sec, cosec and cot.

Ages 16 +

Using Secant Cosecant and Cotangent

How to simplify expressions involving inverse trigonometric functions.