Are all these videos for the new spec or the old one?
@chemistryqmc18609 жыл бұрын
We've been developing these videos for a few years now, so mostly they have their origin with the old course. However there hasn't been a lot of change with the new course, and we are adding, changing and removing things as we go along to make sure they reflect any differences as far as possible. There are still more to make, but life is busy.