The Deutsche Gesellschaft für Internationale Zusammenarbeit GmbH (GIZ), a German development agency collaborated with Indonesia Ministry of Environment and Indonesia Ministry of Education to create textbooks modules that promote sustainability and environment awareness.
Halftone patterns with black and white color approach were chosen to make the illustrations (instructions, cons, charts, infographics) as attractive as possible, but simple enough to reproduce. All of the illustrations in this textbook would be clear and readable even when it is reproduced with a home printer/copier machine.