Age 10/11 Revision of the Perimeter of Shapes Lesson

The lesson’s focus is to understand and find the perimeter of simple and compound shapes. We look at strategies to find the perimeter, starting from counting centimetres, to doubling and adding, to finding the missing sides and adding/doubling. The lesson can be changed depending on the abilities within a class. It includes a starter with questions aligned to formal assessments.

Other lessons in the unit are available here. To take part in trialling any resources for free please e-mail enquiries@

The lesson is aimed at children at an age 10/11 level (Year 6 in England and Wales).

The lesson’s context revolves around a mission to Mars where we are marooned and have to struggle for survival. Pre-lesson preparation is provided with three animations from an astronaut’s first-person point of view as he or she travels and lands on Mars, making the lesson come alive for the children (see the animations here). Two further animations set the context of being marooned on Mars, finding a satellite to communicate with home and then trying to repair it that by finding the perimeter of the holes in its solar panels (see the animations here).

PowerPoints provide structure, modelling, examples and explanation. Optional IT links are provided as well as an optional investigation activity for an ability group.

There are lesson plans which include:

• suggested links to the Welsh, English, Northern Irish, Republic of Ireland and Australian curriculums;
• notes to provide lesson information and context;
• optional pre-lesson preparation;
• starter, main, groups and plenary sections with suggested timings (please change depending on your class);
• sections of the lesson linked to Blooms taxonomy (see for more info.);
• talk time suggestions;
• PowerPoint presentations to support teaching;
• differentiated group activities with extra ideas for early finishers;
• consideration of, and reference to, different learning styles; and
• independent activities that are planned to aim to allow the teacher to support or extend an assessment group within the lesson

We aim to provide detailed and thorough planning, so there will be more information, examples and differentiation in the planning than are needed, and changes may need to be made depending on your class.

For more information on the teaching alive project please visit or e-mail enquiries@ Any positive or constructive feedback appreciated.


Team Teaching Alive

P.S.- See page 33 in PP65M.6.1Perim for any copyright info.
P.P.S.- PowerPoints and PDFs are read only but there is no problem with any requests for changes (within reason).

Save for later
  • PP65M.6.1Perim.pptx
  • PC65M.6.1PerimCount.pdf
  • PC65M.6.2Perim2L-2W.pdf
  • PC65M.6.3Perim2L-2W.pdf
  • PC65M.6.4PerimMiss.pdf
  • PC65M.6.5PerimMiss.pdf
  • PC65M.6.6PerimMiss.pdf
  • PC65M.6.7MissSide.pdf
  • PP65M.6.2Prep.pptx
  • TC65M.6.1Mark.pdf
  • TC65M.6.2Y6PlanPerim.pdf

About this resource


Created: Dec 11, 2019

Updated: Feb 10, 2020

pptx, 3 MB


pdf, 189 KB


pdf, 200 KB


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