Select or create a relevant graphic and write a caption that adds new information rather than repeating the text.
A map, diagram, or timeline can show a reader something words alone explain less clearly -- where the Nile flows, how a pyramid was built in stages, or when key events happened. A graphic should always relate directly to your report's topic, not be decoration.
Every graphic needs a caption. A weak caption just repeats a sentence already in the report. A strong caption adds something new -- a detail, a measurement, or context the graphic itself shows that the text did not already say.
Mastery looks like: They choose a relevant graphic and write a caption that adds genuinely new information beyond the surrounding text.
Common stumbles: Adding a decorative graphic unrelated to the report's actual content; writing a caption that only repeats a sentence already in the text.