Interactive Lessons

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

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Ages 16 +

Problems with Non-Right-Angled Triangles

Students learn how to solve problems involving non-right-angled triangles.

Ages 16 +

Area of Non-Right-Angled Triangles

Using the area rule to find the area of a triangle.

Ages 16 +

Problems Involving the Cosine Rule

Using the Cosine Rule to find a length and angle.

Ages 16 +

Problems involving the Sine Rule

Using the Sine Rule to find an unknown length or angle.

Ages 14 - 16

Cosine Rule – Finding Angles

Students learn how to derive and apply the Cosine Rule to find missing angles in triangles.

Ages 14 - 16

Cosine Rule – Finding Lengths

Students learn how to derive and apply the Cosine rule to find missing lengths in triangles.

Ages 14 - 16

Sine Rule

Students learn how to derive and apply the Sine rule to find missing angle in triangular shapes.

Ages 14 - 16

Trigonometry – Area of Triangles

Students learn how to derive and apply the area formulae for non-right-angles.