# Trigonometry – Area of Triangles

Students learn how to derive and apply the area formulae for non-right-angles.  As learning progresses they are challenged to apply additional formulae to calculate unknown dimensions.
##### Differentiated Learning Objectives
• All students should be able to calculate the area of a non-right-angled if the value of two sides and the adjoining angle are known.
• Most students should be able to calculate the area of a triangle using a combination of the Cosine and Area formulae.
• Some students should be able to derive and solve equations using the Area of Triangle formula.

### Mr Mathematics Blog

#### Area of Compound Shapes

To find the area of compound shapes students need to understand what the word compound means.  Therefore, I ask students to discuss in pairs a definition for the word compound and to extend it to include the shapes below.  As a result of their learning in science students agree that a compound can be defined […]

#### Priorities for the Spring Term

At the start of the Spring Term these are three main priorities for me as the Head of Mathematics.

#### Mutually Exclusive Outcomes and Events

I teach mutually exclusive outcomes directly after students have encountered Venn diagrams. This is the fifth Year 8 Probability lesson.