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Diagrams and flowcharts
This section looks at the other two possibilities for writing task 1, diagrams
and flowcharts. These tasks usually represent how something is produced or
how something works in either a 
linear process
, which is a series of
sequential steps leading to a production of some kind, such as the process of
making paper, or a 
circular process
, where the first and last steps meet at
some point. An example of this is the lifecycle of an insect.
Diagrams and flowcharts resemble each other in organizing the given steps
and applying the required vocabulary, grammatical range, and structures.

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However, the main difference between diagrams and flowcharts is that
diagrams are usually illustrated, so the steps involved in a process are
elaborated using pictures, while various steps of a flowchart are usually
described using short phrases or some keywords.
Paragraphs’ organization in this task is quite similar to charts and graphs
discussed in the previous section, a 150-word report in four paragraphs. The
main difference between them, however, is the range of vocabulary and
grammatical structures. In this type of writing, using “
passive voice
” is
highlighted. Similarly, “
non-defining relative clauses
” play a significant role
here as they enhance cohesion and minimize repetition. As there are no trends
or numbers involved here, there is no need to use “specific vocabulary for
trends” any longer, but it is crucial to use 
sequencing words or
phrases
to
signal the beginning of a new step in a process for better cohesion.
Organization and structure for diagrams
Just like graphs and charts, there are four paragraphs describing diagrams:
1) Introduction
In this paragraph, the task should be introduced while the given topic is
paraphrased. The best verbs to introduce diagrams are: “
illustrate
,”
“
represent
,” and “
show
.” For flowcharts, which come without pictures, verbs
such as “
describe
” or “
show
” are typically used. This selection has to do with
the connotation of these words. For example, the verb “illustrate” should not
introduce a line graph, a table, or a flowchart, where there are no pictures.
2) Overview
This paragraph focuses on 
the first 
and last steps
of a diagram/flowchart and
the 
number of steps 
included. If there are too many steps or it is hard to know
the exact number of steps precisely, it is better to skip it and mention the
number of steps in a more general way. For instance, “
in a few steps
” could
substitute “in 8 steps”. There are no major features in these writings as all the
steps are equally important; this is one main difference between process
diagrams/flowcharts and graphs/charts.