# June 2015 News

This is the June 2015 Transum Newsletter bringing you the latest news from Transum Mathematics.

The puzzle for this month is about a game in which a coin is tossed repeatedly. If it comes up heads Pascal gets a point but if it comes up tails Fermat wins a point. The first person to win three points is the winner and receives the prize of £12.

Unfortunately the game had to end abruptly after three tosses of the coin. Pascal had two points and Fermat had one point. They decided to share the £12 in a ratio that matched the probability of them winning the game if it had continued. How should they divide the £12?

That should give you something to mull over as you go about your activities today. It is worth noting however that if you think the answer is £8 and £4 you may have some more thinking to do. The answer is at the end of the newsletter but don’t look if you want to figure it out for yourself.

Hundreds of virtual Transum Trophies are earned by pupils around the world each day for completing a Transum online activity. The trophies are collected in their own virtual trophy cabinet online which the pupils can proudly show to their teacher, parents or friends.

As a Transum subscriber you can award Teacher Trophies to your pupils for all sorts of achievements. You could issue a trophy for a good effort, taking part in a group project or any reason you see fit. Each pupil can receive a maximum of one Transum Teacher Trophy each day.

The button linking to the trophy awarding page is on your ‘My Account’ page.

As usual there have been a number of additions to Transum Mathematics last month and here is a roundup of those worth mentioning.

For those of you involved with teaching Formal Written Methods there are some examples of standard ways to set out the calculations along with buttons linking to online exercises providing some practice.

Five related activities are provided to support your teaching of correlation. The starting point would be Cartoon Scatter Graph  which is a very visual way to convey the concept of the scatter graph. Pupils have to place cartoon characters on a set of axes to show their heights and ages.

To introduce the concept of correlation there is nothing more memorable than being a part of the graph yourself so Human Scatter Graphs is a highly recommended next step. This resource provides pairs of variables, each relating to the pupils, and asks them to find their position in the room relative to a set of very large axes.

Next is a sorting activity called Correlation which consolidates the understanding of different types of correlation.

The basics are covered by Plotting Scatter Graphs which ensures that the pupils practise the manual point plotting skills before they learn to leave the hard work to the calculator when answering Exam-Style Questions.

Now special awareness skills are a funny old phenomenon. Some children find activities so easy while others struggle, and it is not always the best mathematicians that do well. To provide practice there are a number a different ways you can approach this. Try Net or Not and Plans and Elevations. There is no substitute for making models and setting up situations in the classroom to really get to the bottom of this topic though.

The most popular online exercises, if the number of trophies earned is the defining criteria, are the basic arithmetic quizzes. A new basic exercise called Powten has now been added which has a number of levels, containing twelve questions each, requiring an understating of the easy methods of multiplying and dividing by powers of ten.

Thanks to everyone who have ever given a Starter a score. If you click on the stars on a Starter page you can see a bar chart showing the distribution of the votes. Currently the most popular starter of the year is How Many Triangles and the least popular is Chin Ups. I wonder why!

Finally the answer to the puzzle posed at the beginning of this newsletter. Consider the following equally likely scenarios for the outcome of the next two tosses:

• Tails tails.

Three of the four possibilities would make Pascal the winner so the prize should be shared in the ratio 3:1 meaning that Pascal should receive £9 and Fermat should receive £3.

Not many people get the right answer first time! This puzzle is just one of the Advanced Starters designed for older students.

That’s all

John

Ps. What did the mathematical acorn say when it grew up?

A. Gee I’m a tree (Geometry).

# May 2015 News

It’s an old joke but this newsletter is being written on Star Wars Day, ‘May The Fourth Be With You!’

The puzzle for this month is not, on the surface, strictly mathematical but, as you’ll see from the answer at the end of this newsletter, there is some mathematical debate as to the correct answer. It is however a puzzle that can keep you thinking throughout the day and keep your mind active during coffee breaks, jogging sessions or when the output of the TV is not really very engaging.

Here it is. Find the number which when written as a word has all the letters in alphabetical order and then find the first number to contain the letter A.

Mystic Rose

The first activity worth mentioning this month is called Mystic Rose. It’s an old idea made interactive. It initially seems as though the number sequence created by the number of regions in the roses is simply powers of two but as you get to the 6th term of the sequence there is a surprise in store.

This activity comes with some printable sheets which makes the counting process a lot easier. The sheets can also be used for other investigations such as the two-colour theorem or finding polygons in the patterns of lines. This activity can produce some stunning display work.

The ‘Learn a times table in five days’ page has been brought up to date with a reorganising of the activities and cartoon-like pictures added for all 121 multiplication facts. These pictures, designed to help a person remember whichever multiplication fact they can’t get into their heads, are collected into an easily accessible click grid for Transum subscribers.

The Tablesmaster results page has also been updated so that a pupil can see the memory-aiding picture for the multiplication fact that took longest to recall. I hope this addition contributes towards times table learning around the world.

For those of you working in an IB school you may be interested to hear that additional worked solutions have been added to the Exam-Style Questions pages. Most of the worked solutions contain relevant TI-nSpire screen shots. It is hoped this resource will be just as useful for A-level teachers as the content is so similar.

Finally the answer to the puzzle. Forty is the number that has its letters in alphabetical order and the first number to contain the letter A is either a thousand or one hundred and one. You can see the discussion this puzzle generated on the 7th October Starter page.

Good luck to everyone involved in this exam season. Just remember that Transum has some less demanding, fun activities for you to enjoy when it is all over.

John

ps.If it is cold, go and stand in the corner, because it is 90 degrees there!