I want to get dd1 some kind of electronic maths toy for her 5th birthday, as she has recently become very interested in doing her sums and carries a small yellow calculator everywhere with her trying to figure things out on it, but everything I've seen looks complicated and expensive. I used to have a Little Professor when I was a nipper and was hoping for something easy to use like that, but I think everything is a bit more sophisticated these days. Does anyone have any recommendations?