Stair Perimeter

A Mathematics Lesson Starter Of The Day

9cm

5cm

10cm

11cm

Calculate the distance around this shape
(all angles are right angles)

This is the Starter Of The Day for 9th October

This year the date is palandromic, it reads the same forwards as backwards when written in the short format

9-10-2019


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Topics: Starter | Geometry | Mensuration | Problem Solving

  • Mr Jones, Wales
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  • I think that having a starter of the day helps improve maths in general. My pupils say they love them!!!
  • Mr Smith + whole lot of clever students in set 5., Derby
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  • As simple as it is, we spent 34 Minutes Debating on this!
  • Class 6C, Tamworth
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  • We really liked this one. After a few minutes we realised it was actually easier than it first looked!
  • Year Six, Tickhill St. Mary's
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  • We had answers ranging from 39 to 80-something, and a debate about how long some of the sides were, but the general consensus was that it was "easy"!
  • Belinda, Canada
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  • I just found this site today! One of my professional goals this year was to use starters in all my classes. I can't wait to start using them on Monday! They are just what I was looking for!
  • Miss O Connor, Ireland
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  • This is a brilliant site and the children are very very interested which I like to see.
  • Herons Class, Manor Court Community School, Chard
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  • Thank you for this puzzle, we have just realized how easy it is after about an hour of discussion.
    Please put up more.
  • Mr Gormley, St. Marys CBGS Belfast
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  • I have used this one a few times with pupils from ages 11-14 and it always gets them talking. Thanks. We always use Transum as our starters in this school!
  • Mrs C/ 9St1, Smithills Bolton
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  • 9XST1 from Smithills School
    70cm is the answer
    Great Starter .
  • Mrs H, Glasgow
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  • It would be very useful if the puzzles had an answer section (perhaps with a brief explanation).

    [Transum: Thank you for your comment Mrs H. You will see that under the diagram above there I a button labeled 'Show Hint'. Pressing this button reveals a method for working out the answer but for further reassurance, the numerical answer appears further down this page but only for teachers who are logged in to their Transum subscription]
  • Perton Maths Department, Twitter
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How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
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This starter has scored a mean of 3.2 out of 5 based on 423 votes.


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Answers



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Teacher, do your students have access to computers?
Do they have iPads or Laptops in Lessons?

Whether your students each have a TabletPC, a Surface or a Mac, this activity lends itself to eLearning (Engaged Learning).

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Here a concise URL for a version of this page without the comments.

Transum.org/go/?Start=October9

Here is the URL which will take them to a related student activity.

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