Scran has a large number of images which you may find useful in the creation of teaching resources for Design and Technology. To begin with, browse the Design and Technology pages in the FE/HE section where you’ll find Pathfinder Packs, covering everything from Tools and Processes to Modern Product Design. If you simply need diagrams of different joints and fastenings to help illustrate these processes for your class, you can download large, high-quality images of these.