Interactive Lessons

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

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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 +

Trigonometric Equations and Identities

Students learn how to solve trigonometric equations using identities.

Ages 16 +

Transformed Trigonometric Equations

How to solve trigonometric equations in the form cos(ax)=k, sin(ax)=k and tan(ax)=k.

Ages 16 +

Trigonometric Equations

Students learn how to solve trigonometric equations using identities.

Ages 16 +

Proving Trigonometric Identities

How to prove trigonometric identities.