...to offer more extension work in Maths? My DD in Y3 is an advanced reader, but it seems that what she really loves is maths. However, although she loves maths, she finds it boring at school. They do mixed ability teaching, and she recently got a certificate for doing really good explaining of concepts to other children in her group who don't understand. But although I know this is a good skill, it is not an inspiring activity for a child who really wants to learn more complex concepts.
We are going to try khans Academy at home - based on recommendations on here - but I wondered what your schools do for extension work and how successful you have been with asking your school to provide something that stimulates your children!
i was thinking of using the push to get women into STEM subjects as a justification for not boring a 7 year old girl whose favourite subject is maths (with the caveat that it isn't challenging enough) 
Just to add, I really don't think she is gifted in the realms of many of your children. But she is bright and loves to be challenged.