Has anyone had experience of using Atom Learning for GCSE support? My Y9 son is at a grammar school where they start the GCSE curriculum early for the three sciences, English and Maths. He used Atom to help him prepare for the 11plus and says he'd like to use the same platform for GCSE. I wondered whether anyone had experience of using it so far, or if there are alternative online platforms which offer similar support? Any feedback would be really helpful.