Our module on energy efficiency is broken into four units; design process, measurement, sketching and dimensions, designing for production. We will first look at what the design process is and how we make decisions. Measurement is key in producing a correct and useful design. Sketching and dimensions allows us to communicate our ideas through clear and concise images. Finally when we enter the designing for production we build on the skills we have developed in order to produce 3-D models based on 2-D images. ​