1 2 3 4

Four volumes of the Transum Encyclopaedia are on a shelf as shown here. Billy the book worm begins by eating through the front cover of the first volume and eats his way through to, and including, the back cover of volume four. Calculate the length of his meal.

 Front cover 6mm thick Pages 3.5cm thick altogether Back cover 6mm thick

## A Mathematics Lesson Starter Of The Day

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Topics: Starter | Decimals

• 10a1, Willenhall School
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• The question says through TO the back cover. This implies that he does not eat the back cover! The answer should be 28.2cm.
• Transum,
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• Thanks to all the good people in Year 10 at the Willenhall School for pointing that our. The words 'and including' have now been added to the question.
Incidently the number of volumes in the Transum Encyclopedia and the thickness of the pages changes each time this page is refreshed so it'll be a different answer next time you visit.
• Teacher Of 10a1, Willenhall School
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• My class will be really pleased to see this! This is a great starter for revising decimals and getting students to think functionally. Thanks!
• Class 8b2, Birkdale High School
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• Oops - we all need to remember to read the question - even Miss!
Thanks - we enjoyed this one!
• Mrs Fairclough's Class, Year 9
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• Our class want to know how he got to the front cover of the first volume if he didn't eat through it??
• Miss Williams, Yr 2
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• This is sooooo good everyone loved this thanks.
• Emma Wheeler, Maidstone
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• It is a really good learning programme for me and my class mates we love all your activities.
• Jenny, Etwall
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• Hum....how on earth does the worm get to the front cover of volume one,then???Teleportation??
• George, Gosport
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• The bookworm was obviously laid as an egg on the front cover of volume one before it was put back in the bookcase.
• Julie, Perth
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[Transum: The surprising answer and explanation appear below but only for teachers who have signed in. You can find out more about creating a teacher account here.]
• Stefanie Lehmann,
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• Surely each book in the middle has got a front and back cover to eat through.

[Transum: That's right Stefanie. But that's only part of the way to finding the correct answer to this problem]

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## Hello World

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?

Welcome to the age of the algorithm, the story of a not-too-distant future where machines rule supreme, making important decisions – in healthcare, transport, finance, security, what we watch, where we go even who we send to prison. So how much should we rely on them? What kind of future do we want?

Hannah Fry takes us on a tour of the good, the bad and the downright ugly of the algorithms that surround us. In Hello World she lifts the lid on their inner workings, demonstrates their power, exposes their limitations, and examines whether they really are an improvement on the humans they are replacing. more...

 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=February2

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

Transum.org/go/?to=mislen

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