We decided to collect data around the school drop-off and pick-up times, as this is when all pupils from our school would be walking around the community.
Fe wnaethon ni benderfynu casglu data am adegau gollwng a chasglu'r ysgol, gan mai dyma pryd byddai holl ddisgyblion ein hysgol yn cerdded o gwmpas y gymuned.