DS is in year 7 in a selective school. He was considered extremely good at maths in his local primary school but he's finding the pace and content very different now.
He started in top set (out of 7) based on initial altitude tests but has since moved down a set to the second where he's happier. Having said that a lot of the work I see him coming home with seems to be at a year 9/ GCSE level (whenever he looks something up for homework in BBC bite size it's always seems to be a few years more advanced) so I accept they are stretching them.
Anyway of his sister's friends (a very talented mathematician in year 13) volunteered to do a bit of work with him- going over things he's done or not understood in class etc. However she's suggested that it would help if they had some actual questions to work through and I was wondering if there were any books or resources people could recommend that could give them work they could do?
I know this seems mad but he's got a specific ambition in life for which he will need very good maths results. The top 2 sets in the school do a much faster and more advanced curriculum. They all end up with 9s at GCSE and do GCSE further maths and DS wants to stay in this cohort. This was his suggestion- I'm not forcing this on him!