Use the keys on this broken calculator to make the totals from one to ten. Five has already been done as an example.

 1 = 2 = 3 = 4 = 5 = 6 = 7 = 8 = 9 = 10 =

## Awesome!

Try the pupil version of this activity at:

## A Mathematics Lesson Starter Of The Day

More broken calculators at:    Transum.org/go/?to=Broken

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Topics: Starter | Arithmetic

• Carla Libanati, London
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• This is an excellent way to make pupils think out of the box!
• Mr. Poate, Whitecross
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• Simple and easy, could do with more of a challenge. Top set year 9.
• Mrs Lingham's Year 8's, Harpenden
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• We enjoyed this starter but would like a plus sign please!!!!!
• A Kirby, Solihull. UK
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• This was really well recieved by my 16 year olds. They wrote all possible solutions down on paper and we incorporated BIDMAS. They were frustrated by the lack of a + sign but this made them think outside the box.
• Transum,
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• For many years I actually had a broken calculator just like this! It was an old cheap calculator that I'd pulled some buttons off. It made an excellent visual aid and stimulus for this activity. There are a number of different versions of the broken calculator activity on Transum that you can reach by clicking on the link lower down this page.
•

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This starter has scored a mean of 3.6 out of 5 based on 441 votes.

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## 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.

## Casio Classwiz Calculator

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You are buying a (driverless) car. One vehicle is programmed to save as many lives as possible in a collision. Another promises to prioritize the lives of its passengers. Which do you choose?

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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).

Transum.org/go/?Start=January5

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

Transum.org/go/?to=broken

For Students:

For All: