= 24 = ? = ? = 19 = 21 = 32 = ? = ?

Each traffic sign stands for a number. Some of the sums of rows or columns are shown. What numbers might the signs stand for?

[Teacher: Press the F11 key and hide the remaining toolbar to show the whole of this grid if it doesn't fit on your screen]

## A Mathematics Lesson Starter Of The Day

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• Mr. H, Mary Hare School
•
• Chloe found a different solution.
• The Best Maths Class Ever. 7cd/M2, King Alfred's College, Oxfordshire UK
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• Jack, Georgina and Patrick found the solution very quickly. Olivia found out that the top column was the same as the right side column. Some of us found it hard (including sir!!).
• Year 9, Leicester
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• Very hard and dodgy answers!
Maybe a good starter for older classes.
• Transum,
•
• Thanks for the comments above. They refer to the randomly generated puzzle which you can see by pressing the button below. The puzzle you see the first time you visit this page should be reasonable for a 10 to 14 year old to solve and has a unique solution. Let us know how it works for your students.
• Apex Year5/6, Apex Primary
•
• At Apex, our year5/6 class found is quite easy! but a good starter :).
• Selina, Stanwell Fields
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• Easy for us 6 year 6.
• Karris, Oxford University
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• Easy! The Class love it.
• Mrs Webster, Brackenwood Junior School
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• On the whole Y4 enjoyed this task but some children found it quite tricky.
• Mjd School, 6
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• This is cool for the year 6.
• 8E, Friary
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• 8E at Friary School found this 'a bit easy'! Something a bit more challenging please!

[Transum: Well done 8E. Did you scroll down the page and see the extension?]

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.

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
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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 3.2 out of 5 based on 549 votes.

Previous Day | This starter is for 11 March | Next Day

 = 8 = 6 = 4 = 3

Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.

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.

## Texas Instruments Nspire 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...

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.

The redesigned Retina display is as stunning to look at as it is to touch. It all comes with iOS, the world's most advanced mobile operating system. iPad Pro. Everything you want modern computing to be. more...

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

 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=March11

Here is the URL which will take them to another problem solving activity.

Transum.org/go/?to=tantrum

## Extension

The answer to this puzzle is not 12. What is it?