Stair Perimeter

A Mathematics Lesson Starter Of The Day

9cm

5cm

10cm

11cm

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


Share

Topics: Starter | Geometry | Mensuration | Problem Solving

  • Mr Jones, Wales
  •  
  • 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
  •  
  • As simple as it is, we spent 34 Minutes Debating on this!
  • Class 6C, Tamworth
  •  
  • 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
  •  
  • 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
  •  
  • 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
  •  
  • This is a brilliant site and the children are very very interested which I like to see.
  • Herons Class, Manor Court Community School, Chard
  •  
  • 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
  •  
  • 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
  •  
  • 9XST1 from Smithills School
    70cm is the answer
    Great Starter .
  • Mrs H, Glasgow
  •  
  • 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]

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.
Click here to enter your comments.

If you don't have the time to provide feedback we'd really appreciate it if you could give this page a score! We are constantly improving and adding to these starters so it would be really helpful to know which ones are most useful. Simply click on a button below:

Excellent, I would like to see more like this
Good, achieved the results I required
Satisfactory
Didn't really capture the interest of the students
Not for me! I wouldn't use this type of activity.

This starter has scored a mean of 3.3 out of 5 based on 285 votes.


Previous Day | This starter is for 9 October | Next Day

 

Answers

70cm



Your access to the majority of the Transum resources continues to be free but you can help support the continued growth of the website by doing your Amazon shopping using the links on this page. Below is an Amazon search box and some items chosen and recommended by Transum Mathematics to get you started.

Have you read Craig's book yet?

Craig Barton must surely be the voice of Mathematics teachers in the UK. His wonderful podcasts interviewing the industry experts have culminated in this wonderful book. As Craig says: "I genuinely believe I have never taught mathematics better, and my students have never learned more. I just wish I had known all of this twelve years ago..." more...

"How I wish I’d taught maths' is an extraordinary and important book. Part guide to research, part memoir, part survival handbook, it’s a wonderfully accessible guide to the latest research on teaching mathematics, presented in a disarmingly honest and readable way. I know of no other book that presents as much usable research evidence on the dos and don’ts of mathematics teaching in such a clear and practical way. No matter how long you have been doing it, if you teach mathematics—from primary school to university—this book is for you." Dylan Wiliam, Emeritus Professor of Educational Assessment, UCL.

The Craig Barton Book

Graphic Display Calculator

This handheld device and companion software are designed to generate opportunities for classroom exploration and to promote greater understanding of core concepts in the mathematics and science classroom. TI-Nspire technology has been developed through sound classroom research which shows that "linked multiple representation are crucial in development of conceptual understanding and it is feasible only through use of a technology such as TI-Nspire, which provides simultaneous, dynamically linked representations of graphs, equations, data, and verbal explanations, such that a change in one representation is immediately reflected in the others.

For the young people in your life it is a great investment. Bought as a gift for a special occasion but useful for many years to come as the young person turns into an A-level candidate then works their way through university. more...

iPad Air

The analytics show that more and more people are accessing Transum Mathematics via an iPad as it is so portable and responsive. The iPad has so many other uses in addition to solving Transum's puzzles and challenges and it would make an excellent gift for anyone.

You have to hold iPad Air to believe it. It’s just 7.5 millimeters thin and weighs just one pound. The stunning Retina display sits inside thinner bezels, so all you see is your content. And an incredible amount of power lies inside the sleek enclosure. So you can do so much more. With so much less. more...

Before giving an iPad as a gift you could add a link to iPad Maths to the home screen.

Click the images above to see all the details of these items and to buy them online.

Online Maths Shop

Laptops In Lessons

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).

Laptops In Lessons

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.

Transum.org/go/?to=areamaze

Student Activity


Apple

©1997-2018 WWW.TRANSUM.ORG