Read it from the bottom. Year 7 sets off on the left, the track climbs through Years 8 and 9 into IGCSE, then splits for post-16.
Each unit is sized to its half-term on the school calendar. 35 teaching weeks hold 32 planned lessons, with spare weeks in Autumn 1, Autumn 2 and Summer 1. Every lesson has a ready-to-teach 50-minute plan and a worksheet with answers, and lessons are a mix of on-device, unplugged and mixed.