Hi, I was wondering whether anyone has tried this sort of activity with a class? If you're not familiar with the idea, you give a short list of things (e.g. numbers) and have to find as many things as they have in common, and then for each item describe why it could logically be the odd one out. I couldn't find a book with just these in, so have written a (short) book of copy-masters designed to be used in the primary maths classroom. If anyone is interested in trialling this, please leave an email address. I will gladly send a copy to the first 10 respondents to this thread who could trial it for me, but only if they promise to feed back how it went! This has worked to varying degrees in the past though only two of the people actually remembered to leave me feedback; thank you to you both. This is not a sales pitch - I am planning to put this as a free download on my website for anyone to get and use without cost.