How can you teach a person about technology and engineering if he has never been exposed to the tools and devices used to create and construct? Learners with visual impairments examine a number of common tools, such as hammers, wrenches, C-clamps, and screwdrivers. They feel each tool, discuss its purpose, and then use it. This is a great way to help learners conceptualize what tools are, which will help them build a complete understanding of the world around them.