Your Basket 0 items - £0.00

Students learn how to calculate the area of triangles, parallelograms and trapeziums. They use this knowledge to later find the total surface of cuboids and prisms.

This topic takes place in Term 2 of Year 8 and is the prerequite topic for Circles, Cylinders and Circular Shapes.

- Derive and apply formulae to calculate and solve problems involving: perimeter and area of triangles, parallelograms, trapezia, volume of cuboids (including cubes) and other prisms
- Calculate and solve problems involving: perimeters of 2-D shapes and composite shapes.

- The area of a triangle is the product of its perpendicular height and base divided by two. Students often forget to divide by two.
- To find the area of a composite shapes students should break it down into its individual components.
- When identifying individual components of a composite shape students tend to look for triangles and rectangles rather than trapezia and parallelograms.
- To find the surface of a cube or cuboid students could draw the net and work out the composite area.
- More able students could derive the formula for the surface are of a cuboid.

Develop fluency

- Use language and properties precisely to analyse 2-D and 3-D shapes

Reason mathematically

- Begin to reason deductively in geometry,

Solve problems

- Select appropriate concepts, methods and techniques to apply to unfamiliar and non-routine problems.

Shape

- Derive and apply formulae to calculate and solve problems involving: perimeter and area of triangles, parallelograms, trapezia, volume of cuboids (including cubes) and other prisms
- Calculate and solve problems involving: perimeters of 2-D shapes and composite shapes.

February 16, 2018

Back in May 2017 maths teachers around the country eagerly awaited the first exam for the new GCSE Mathematics syllabus. Proving geometrical relationships using algebra featured at grade 9. In Paper 1 of Edexcel’s test paper the last question of the higher tier looked like this. Edexcel wrote about student’s performance on this question in […]

February 10, 2018

Circles, cylinders and circular shapes follows on from area of 2D shapes and surface area of 3D cuboids and prisms which students study in Term 2 of Year 8. In this unit students learn how to calculate the circumference and area of circles both as decimals and in terms of π. Learning progresses from 2D […]

January 28, 2018

Higher GCSE maths students are required to plot and interpret histograms with unequal class widths. Drawing histograms with unequal class widths are very common in GCSE maths papers. Histograms versus bar charts Histograms look like bar charts but have important differences. Histograms use a continuous horizontal scale which means the bars touch so the difference […]