It is a critical design education project which aims to be able to analyse critically the examples of design products which is used in the immediate environment where daily life takes place and to be able to discuss how to eliminate their potentially problematic aspects, by raising awareness about the existing qualities of design products or by increasing the existing ones and by focusing on design thinking and innovative and environmentalist approach. Keywords: reasoning, design thinking, critical thinking, analytical thinking and learning, product design, sustainable design, eco-friendly design, Inquiry-Based Science Education (IBSE) and technology use.