Most of the designs on these T-shirts are fun and eye-catching ways to help wearers and viewers build up big ideas. Big ideas are important ideas in life, history, literature, and science. Building an idea means to clarify it and learn new examples of it. For instance, there are many T-shirt examples of the idea, “Living things adapt to survive” on this site. There are also many designs with big ideas stated underneath them—ideas that you and others (viewers of your T-shirt) can build up over time. For example, one shirt has the big idea, "KEEP IT REAL." You can think about what this idea means and examples of it in your life.