Sustainable waste management is an urgent issue in developing countries. This study describes how lectures and group games influence knowledge in waste management of fourth-grade elementary students whose development stage is thought to be effective concerning positive attitude shifts. We employed a control-treatment design and two schools were…

Plastic recycling has been an alternative method for solid waste management apart from landfill and incineration. However, recycling quality is affected when all plastics are discarded into a single recycling bin that increases cross contaminations and operation cost to the recycling industry. Following the engineering design process, a new…