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Area of any Triangle

In this lesson, learners will be able to measure and calculate the perimeter of composite rectilinear shapes in centimetres and metres; calculate and compare the area of rectangles and squares, including using standard units, square centimetres (cm²) and square metres (m²); and estimate the area of irregular shapes.
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area of any triangle
Description

By the end of this unit, learners will:

  • extend their knowledge of working out the area of a right-angled triangle to work out the are of any triangle;
  • identify that the perpendicular height is not always the length of one of the sides.

Year 6 Measurements:

  • Recognise that shapes with the same areas can have different perimeters and vice versa.
  • Recognise when it is possible to use formulae for the area and volume of shapes.
  • Age: 9-11
  • England & Wales: Year 5-6
  • Scotland: Primary 5-6
  • Rep. Ireland: Fourth-Fifth Class
  • Australia: Grade 4-5
  • USA: Grade 4-5
  • Three-part Lesson
  • Self-marking Activities
  • Fluency, Reasoning and Problem-solving Questions.
  • Engaging Drag and Drop Activities
  • Interactive Self-marking Worksheet
  • Printable Worksheets to Consolidate Learning

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