A high school is launching a recycling campaign for a week. It was found that some students have mixed the scrap steels, polyethylene terephthalate bottles, and aluminum cans into a recycle bin. Using the understanding of material properties, describe the order of methods, that enable the students to separate all the wastes found in the recycle bin, in a safe way, without causing harm to the environment, by using the facilities/ resources found in the school.