Next half-term it is Fairtrade Fortnight: a great opportunity to get children thinking about where they spend their money and the difference that choice can make other people's lives.
In 2009 I wrote a book about a boy called Kofi, who - as well as being a gifted footballer - was the son of cocoa bean farmers in Ghana.
The book is called Off Side.
At the beginning of the Off Side, Kofi's family were being cheated and not paid a fair amount for their beans. By the end they had become part of the Kuapa Kokoo co-operative which supplies chocolate manufacturers Divine.
I was very lucky, when in Ghana researching my novel, that Divine took me to meet some farmers and to a school paid for by our buying Fairtrade Chocolate. I have seen the results of the decision we can make to buy Fair Trade chocolate: children being well-schooled, learning to run their own businesses and families living in decent accommodation.
When I came home I worked with Divine Chocolate to produce a schools' pack that should encourage children to think about the impact of buying Fair Trade products. It is free to download.
There is more information about my book, Off Side, which also looks at people trafficking, particularly the exploitation of young footballers from Africa.
And, if you would like to download the first chapter of the book for free, it is available here.
Fair Trade fortnight runs from 25th February to 10th March 2013.