It is very cold at the North Pole, so cold that your brain could stop working.

Show that your brain is working well right now by writing out the 85 times table.

How far can you get in five minutes?

North Pole
85 miles

Try this activity again when you are feeling cold. Can you get as far in five minutes?

## A Chilling Mathematics Lesson Starter Of The Day

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Topics: Starter | Tables | Xmas

You can find many more ChristMaths activities at:

Transum.org/ChristMaths/

• Primary 6 & Mrs Thom, Netherlee PS
•
• In five minutes, our primary 6 class managed to get the first 16 stations correct. We felt that it was tricky but a lot of fun. Some were frustrated that if they got one answer wrong then every other answer was also wrong.

We really enjoyed today's challenge!
• Matthew, 3D, Craigslea State School
•
• I got up to the 29th station in 5 minutes.
It was fun!
• Katee Wheeler, ------
•
• This starter has some potential and is very helpful and interesting for developing Mathematical skills.
• Debbie, Guernsey
•
• Very absorbing activity! One of my Y5s managed up to 49 x 44 in 5 minutes.

[Transum: If are reading this comment and wondering why it refers to the 44 times table while you have been presented with another times table it is because a different number appears every time this page is loaded.]
• Transum,
•
• Yes, the cold can really affect your brain in a negative way. Perhaps a chilly day where you live won’t make a big difference but for really cold environments there have been studies which have found that mental changes (reflecting a cooling brain) are the first sign of hypothermia. The tell-tale signs include becoming withdrawn, slower movements, poor coordination, hallucinations, slurred speech, poor memory and eventually loss of consciousness.

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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Not for me! I wouldn't use this type of activity.

This starter has scored a mean of 3.0 out of 5 based on 186 votes.

Previous Day | This starter is for 17 December | Next Day

1 x 85 = 85
2 x 85 = 170
3 x 85 = 255
4 x 85 = 340
5 x 85 = 425
6 x 85 = 510
7 x 85 = 595
8 x 85 = 680
9 x 85 = 765
10 x 85 = 850
11 x 85 = 935
12 x 85 = 1020
13 x 85 = 1105
14 x 85 = 1190
15 x 85 = 1275
16 x 85 = 1360
17 x 85 = 1445
18 x 85 = 1530
19 x 85 = 1615
20 x 85 = 1700
21 x 85 = 1785
22 x 85 = 1870
23 x 85 = 1955
24 x 85 = 2040
25 x 85 = 2125
26 x 85 = 2210
27 x 85 = 2295
28 x 85 = 2380
29 x 85 = 2465
30 x 85 = 2550
31 x 85 = 2635
32 x 85 = 2720
33 x 85 = 2805
34 x 85 = 2890
35 x 85 = 2975
36 x 85 = 3060
37 x 85 = 3145
38 x 85 = 3230
39 x 85 = 3315
40 x 85 = 3400
41 x 85 = 3485
42 x 85 = 3570
43 x 85 = 3655
44 x 85 = 3740
45 x 85 = 3825
46 x 85 = 3910
47 x 85 = 3995
48 x 85 = 4080
49 x 85 = 4165
50 x 85 = 4250
51 x 85 = 4335
52 x 85 = 4420
53 x 85 = 4505
54 x 85 = 4590
55 x 85 = 4675
56 x 85 = 4760
57 x 85 = 4845
58 x 85 = 4930
59 x 85 = 5015
60 x 85 = 5100
61 x 85 = 5185
62 x 85 = 5270
63 x 85 = 5355
64 x 85 = 5440
65 x 85 = 5525
66 x 85 = 5610
67 x 85 = 5695
68 x 85 = 5780
69 x 85 = 5865
70 x 85 = 5950
71 x 85 = 6035
72 x 85 = 6120
73 x 85 = 6205
74 x 85 = 6290
75 x 85 = 6375
76 x 85 = 6460
77 x 85 = 6545
78 x 85 = 6630
79 x 85 = 6715
80 x 85 = 6800
81 x 85 = 6885
82 x 85 = 6970
83 x 85 = 7055
84 x 85 = 7140
85 x 85 = 7225
86 x 85 = 7310
87 x 85 = 7395
88 x 85 = 7480
89 x 85 = 7565
90 x 85 = 7650
91 x 85 = 7735
92 x 85 = 7820
93 x 85 = 7905
94 x 85 = 7990
95 x 85 = 8075
96 x 85 = 8160
97 x 85 = 8245
98 x 85 = 8330
99 x 85 = 8415
100 x 85 = 8500

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.

There are a printable worksheets for the more common timestables.

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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...

 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=December17

Here is the URL which will take them to a game that will help them practise the 85 times table.

Transum.org/go/TD/?T=85

Here is the URL which will take them to the most popular multiplication tables app.

Transum.org/go/?to=tablesmaster

For Students:

For All: