Writing theory

A process report explains a sequence. A cycle returns to an earlier stage. Read every arrow, including any side inputs, branches, or recycling loops.

For your overview, identify what kind of process it is and its broad path. For example: “Overall, used glass passes through collection, preparation, and remanufacturing before new containers are delivered.”

There is no need to force a stage count if the diagram combines several actions or makes the boundaries unclear.

Turn labels into connected sentences

Suppose the diagram shows:

Collection → sorting by colour → washing → crushing → melting → moulding → cooling → delivery.

Instead of repeating “then” eight times, organise the sequence:

“After collection, the glass is sorted by colour and washed. It is then crushed into small fragments, which are heated until they melt. The molten material is poured into moulds before the new containers are cooled and delivered.”

This is a short demonstration, not a complete Task 1 answer. A full response needs an introduction, overview, and sufficient relevant description.

Active and passive forms

Use the passive when the material receives an action: “The bottles are washed.” Use the active when a named participant performs one: “A conveyor carries the bottles into the washing chamber.”

For a natural process, active forms often work well: “The eggs hatch, and the young insects feed on leaves.” Passive voice is a useful option, not a requirement for every sentence.

Sequence and connection

Useful expressions include “initially,” “after this,” “once,” “before,” “during the next stage,” and “finally.” A cycle may need “the cycle then begins again.”

Distinguish a stated function from an invented reason. If washing removes dirt in the diagram, explain that connection. Do not add temperatures, times, machinery, or scientific mechanisms that the diagram does not provide.

For a diagram of an object or system, follow its spatial or functional organisation: identify the main components and explain the connections shown. A system diagram may not be a simple production line.