Jo Boaler (born 18 February 1964)[1] is a British education author and Nomellini-Olivier Professor of Mathematics Education at the Stanford Graduate School of Education. Boaler is involved in promoting reform mathematics and equitable mathematics classrooms. She is the co-founder and faculty director of youcubed a Stanford centre that offers free mathematics education resources to teachers, students and parents. She is the author of nine books, including Limitless Mind (2019), Mathematical Mindsets (2016), What's Math Got To Do With It? (2009) and The Elephant in the Classroom (2010), all written for teachers and parents with the goal of improving mathematics education in both the US and UK.

Wikipedia - https://en.wikipedia.org/wiki/Jo_Boaler

This is not an extensive list of available support websites for parents/pupils however it provides a selection to choose from.