In this activity, learners investigate the properties of graphene and graphite. Learners use tape and graphite to make graphene and learn that graphene is a single layer of carbon atoms arranged in a honeycomb pattern. Learners test whether graphite is conductive by using graphite to complete a circuit and light up a light bulb. Notes: the graphite flakes are expensive, but should last a long time. Alternatively, you could try to peel a graphene layer from the pencil, instead of buying the graphite flakes. A pencil should still work, though the quality of the graphene layer will likely be lower.