My dd is starting at a high achieving secondary school in September. She has always struggled with maths, and through sheer hard work and determination, she got a 4a in her year 6 SATS. (proud mummy emoticon). The problem is, she finds it very hard to retain maths in her head (not a problem with other subjects, so it's not a memory issue) `We have talked about it, and we have decided it would be a good idea to keep things ticking over during the summer, so that she hits the ground running, so to speak, in September. Can anyone recommend me a book that we could use in odd moments during the holidays? Or any other advice? Thank you!