Was a science teacher for two years in high school , I work now as an engineer. My strong bone is chemistry but I can give you lessons in math, physic and biology too from a school level to a university level. Was a science teacher for two years in high school , I work now as an engineer. My strong bone is chemistry but I can give you lessons in math, physic and biology too from a school level to a university level. Was a science teacher for two years in high school , I work now as an engineer. My strong bone is chemistry but I can give you lessons in math, physic and biology too from a school level to a university level.