This document provides first aid instructions for clearing choking obstructions in children over 1 year old and babies under 1 year old. For children over 1 year, it instructs to determine if they can cough or speak, and if not, to perform back slaps and abdominal thrusts. For babies under 1 year, it instructs to perform back slaps then chest thrusts if needed. It stresses the importance of calling for emergency help if the obstruction does not clear.