In this activity, learners build a LEGO® structure while wearing mittens. This activity shows learners how difficult it is to build small things when your tools are too big. This is a great activity to get learners thinking about how scientists and engineers need special tools and equipment to work at the nanoscale. A great complement to this activity is "Exploring Tools: Special Microscopes," in which learners discover different tools scientists use to explore and manipulate nanoscale objects.