Finding the Area of a Triangle

Finding the Area of a Triangle
Finding the Area of a Triangle
Finding the Area of a Triangle
Finding the Area of a Triangle

              Finding the Area of a Triangle

              Students practice finding the area of a triangle.  As the lesson progresses students learn how to use the formula and are challenged to find the area of composite triangles on a grid.The start of the lesson recaps finding the area of rectangles.  In the main part students learn how to calculate the area of triangles using the formula.  In the plenary all are challenged to find the area of a composite shape using triangular components.
              Differentiated Learning Objectives
              • All students should be able to calculate the area of a triangle as half the area of a rectangle.
              • Most students should be able to calculate the area as a product of half its base and perpendicular height.
              • Some students should be able to calculate the area of composite shapes involving triangles
              View online lesson
              Lesson Downloads
              Download PowerPoint Download Notebook Download Flipchart Download WorksheetDownload Interactive Excel File
              Scheme of Work Link
              Perimeter, Area, Volume 
              IMMEDIATE DOWNLOAD

              Mr Mathematics Blog

              Angles in Polygons

              There are two key learning points when solving problems with angles in polygons.  The first is to understand why all the exterior angles of a polygon have a sum of 360°.  The second is to understand the interior and exterior angles appear on the same straight line. Students can be told these two facts and […]

              Getting Ready for a New School Year

              When getting ready for a new school year I have a list of priorities to work through. Knowing my team have all the information and resources they need to teach their students gives me confidence we will start the term in the best possible way.  Mathematics Teaching and Learning Folder All teachers receive a folder […]

              Mathematics OFSTED Inspection – The Deep Dive

              Earlier this week, my school took part in a trial OFSTED inspection as part of getting ready for the new inspection framework in September 2019. This involved three Lead Inspectors visiting our school over the course of two days. The first day involved a ‘deep dive’ by each of the Lead Inspectors into Mathematics, English […]