Students Ehtegebreal AregehagnProject title: Improving the Learning of Geometrical Optics with Multiple Representations Mulugeta AwayehuProject title: Enhancing the environmental education practices of primary schools: Inspecting the school curricula, teachers’ practice, and interventions Mirtachew Tihar AliProject title: Laboratory Experiences: An Investigation of Supervised Laboratory Instruction (SLI) for Enhancing the Quality of High School Chemistry Education in Ethiopia Kidus HunegnawProject title: Teachers’ practice in task designing and implementing in elementary schools Dereje TayeProject title: Institutionalizing Problem-Solving Cycle (PSC) of mathematics teachers professional development model into the Ethiopian education system through the Preparation of Mathematics Leaders Berie GeteProject title: The Use of Problem-Solving Based Mathematics Instruction in Maximizing Students Classroom Learning Opportunities Abrham KassaProject title: Designing learning environments to promote conceptual change in physics