A composite class, in a small central city school, were studying plants. They analysed and modified an existing hydroponics system in order to develop a suitable system for use and operation in the classroom environment.

The following sections detail the work, and indicate what was achieved at each stage.

For classroom background and teaching and learning sequence, see The learning context.

	Identifying and clarifying the need and developing key criteria
	Generating possible solutions
	Examining professional, technological practice
	Analysing existing system and modifying it for classroom use
	Using equipment to construct a hydroponics system and evaluating success