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• Class 1D, Linwood High School Renfrewshire
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• Class 1 found 8 different ways. 597 + 234 + 168, 534 + 286 + 179, 186 + 274 + 539, 189 + 247 + 563, 452 + 378 + 169, 179 + 368 + 452, 536 + 274 + 189, 134 + 276 + 589
• Jon Brian, British School of Bucharest
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• Inspired by those who found 8 correct answers, 5B from the British School of Bucharest found 10!
Thanks for the stimulus!
• Rhonda, Rocky Mtns
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• Excellent exercise.
• Laverne, China
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• WOW this exercie blew my mind!!! My year 2 class found 137 different solutions ;).
• Shamelddon, London,UK
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• This is the best website that I've ever come across,it is very educational,engaging and amazingly interesting.It can engage all age;old or young.Well done.
• Jackie,
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• This really made me think thanks.
• Celeste McKenzie, CT
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• This is a great exercise. I have a variation: Using the numbers 1-9 only once each, make a true addition sentence where 2 3-digit numbers add up to a third 3-digit number.
• Carol, London
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• Brilliant exercise.
• Year 6 Class, Santa Clara Primary School - Western Australia
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• We got a new record, we were able to achieve 14 different solutions, not using numbers swapped around.
• Gemma Robinson, Leicestershire
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• Very good exercise that gets your brain thinking.
• Joshua Iyobhebhe, Bishop High
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• I loved this starter my favourite one so far this is the best website ever the kids always get exited when I put a starter up on the board.
• Mr G, Western Australia, Australia
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• Our man Lachie finished this Mathematical calculation in under one minute..........With an awesome haircut too!
• Mr Webber, Pencoed School
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• 7/1 thought this was great!
• Ibrahim, Byron Court Primary, Middlesex
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• I got 597,138,264. Took a bit of trail and error.
• Mandy,
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• Incredible! My class found 97 solutions!
• Mrs Maclean, St Andrews RC High School
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• This is a great starter activity! Not only did my S2 class calculate many different soltions they calculated exactly how many different solutions are possible. They loved the challenge!
• Sycamore Class, West Borough Primary School
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• A supreme game! The girls were much quicker than the boys. We found ten solutions before starting our day!
• Mariz, Agutaya Palawan
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• Excellent exercise!!!
• D Brunner, Ilfracombe
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• There are actually only 5 solutions with all others being a permutation of the digits in the columns.
Hundreds column can only be digits 125 or 134 (any arrangement)
If 125 then tens column can only be 369, 378 or 648, with remaining digits in the units column.
If 134 then tens column can only be 279 or 567 with remaining digits as units.
These correct columns can be arranged in 6 different ways each giving 6x6x6=216 combinations x 5 solution sets = 1080 possible.
• Logi, Ghana And Ireland And England
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• I found one which is 479+368+152 lucky guess.
• , Vp
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• I quite liked this one.
• Mr. Keir, Welshpool
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• Very competitive in Welshpool High School. Year 7 set 2 loved it!

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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

There is currently a lot of talk about this new calculator being the best in its price range for use in the Maths classroom. The new ClassWiz features a high-resolution display making it easier to view numerical formulas and symbols but it isn't a graphical calculator as such (it has the capacity to draw graphs on your smart phone or tablet, via a scannable QR code and an app).

As well as basic spreadsheet mode and an equation solving feature you also get the ability to solve quadratic, cubic or quartic polynomial inequalities and the answer is given just as it should be written down, using the correct inequality symbols!

This calculator has a high-performance processor and twice the memory of previous models ensuring speedy operation and superior computational power.more...

## 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.

This calculator has a high-performance processor and twice the memory of previous models ensuring speedy operation and superior computational power.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=April4

Here is the URL which will take them to the student version of this activity.

Transum.org/go/?to=999

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