My Y4 DS is in a state school and will be sitting 11+ in 2 years. Exam prep won't start until much later but to work on some foundation at home, the trickiest subject is Maths.
In school, he is (understandably) stuck at Y4 national curriculum and his teacher says that he will have to learn ahead of the national curriculum to cover 11+ exam syllabus in time for exam. The school is underperforming and (understandably) unable to stretch him beyond the national curriculum.
What is the best way for him to learn ahead at home methodically? Rather than questions based workbooks, I'm looking for a self learning program that explains new concepts really well. I can help with the problems he gets wrong, but I'd rather a well designed program, rather than myself, to introduce concepts.