Colourful numbers

Photocopy the blank digital watch face shown above. Ask younger pupils, or those in lower-ability groups, to find out how they can make all the numbers from one to 10 by colouring in some of the blanks.

Digital numbers

Use rods (or sticks or pieces of straw) to make times using digital numbers.

l How can you make all the digits from this outline of the figure eight?

* Make a time using as few rods as possible.

* Make a time using exactly 15 rods.

* Make a time using as many rods as possible.

Beeping Watches LESS THAN Suppose a watch beeps once at 1.00, twice at 2.00 and so on.

* How long till the watch has beeped 10 times?

* How many times will it beep in a day?

* How long till the watch has made more than a thousand (or a million) beeps?

Time's up!

Suppose you are designing a watch that will beep after a certain amount of time. This might be a dinner lady's watch that beeps after the time allowed to eat a packet of crisps, or a PE teacher's watch that beeps to show that pupils should change back into their clothes.

l Ask your class how long they think should be allowed for these activities.

* Ask them to discuss and present their findings.

* Time the events to see how long they take.

Jet-setter's watch

This watch tells the time in different countries. If you don't have one you can work out the time in different countries yourself. Jamaica is 5 hours behind GMT, China is 8 hours ahead, Nepal is 5.5 hours ahead, Tonga is 13 hours ahead. Ask pupils to: * Work out the time in these places when it is noon in Britain (GMT).

* Work out the time here when it is noon in these places.

* Decide when it would not be sensible to phone these places from Britain.

Time differences for other countries can be found at www.bt.com (click on "at home", then "find a number" then "international"). You can check the time around the world at www.worldtimeserver.com

www.timezone.com

Details about new watch technology and designer watches.

This feature supports:

* The QCA's design technology schemes of work: developing, planning and communicating ideas and investigating and evaluating a range of familiar products, at both KS1 and KS2.

* KS1 mathematics Y1 unit 78; Y2 unit 79.

* KS2 Y3 unit 79; Y4 units 98,100.

It only takes a moment and you'll get access to more news, plus courses, jobs and teaching resources tailored to you

## Latest stories

### Covid: 41% pupils still not getting ‘full schooling’

LSE study also highlights educational disparities between privileged students and those from poorer backgrounds under pandemic
Tes Reporter 26 Oct 2020

### Coronavirus and schools: LIVE 26/10

A one-stop shop for teachers who want to know what impact the ongoing pandemic will have on their working lives
Tes Reporter 26 Oct 2020

### WATCH: Tips for embedding wellbeing at your school

Join Matt Seddon as he explains how his school in Hong Kong has made staff and student wellbeing a priority
Tes Editorial 25 Oct 2020

The way you park your car at school in the morning says a lot about your approach to the job, says Stephen Petty
Stephen Petty 25 Oct 2020

### Do teachers cry more than people in other professions?

Are teachers more likely to cry in the workplace because they're naturally empathic? Or, says Zoe Enser, is it a reflection on the job itself?
Zoe Enser 25 Oct 2020

### Class book review: Wink

This account of cancer – based on the author's experiences – made our reviewers cry, laugh and keep turning the pages
Gill Ward 25 Oct 2020

### Experts call for pupils to wear masks in classrooms

Independent Sage group calls for secondary school pupils to wear masks in classrooms for up to four weeks after a circuit breaker lockdown
John Roberts 25 Oct 2020

### Labour to push for new vote on free school meals

Sir Keir Starmer tells government its 'not to late to do the right thing' after impact of Marcus Rashford's campaign
John Roberts 25 Oct 2020

### 9 tips for surviving quarantine and staying sane

Two weeks in a hotel room is no one's idea of fun - but there are some ways to make it more bearable, as this recently freed teacher outlines
Chris Barnes 25 Oct 2020

### Schools may have to partially close, says top scientist

Professor Neil Ferguson warns that country may be unable to 'get on top of Covid transmission' without moving to virtual education
John Roberts 25 Oct 2020