A comparison visual should label the quantity, unit, scope and period. Include relevant
limits rather than hiding them in a confident conclusion. Distinguish what was recorded
from what the group proposes next.
Worked example. One garden plot used 400 litres across four observation days before
a trial and 250 litres across four different days after it began. The recorded difference
is 150 litres, or 37.5% of the first total. Rainfall differed and planted area was not recorded,
so the comparison does not isolate the trial’s effect or supply litres per square metre.
It does not establish the same result everywhere.
For a formal presentation, show the two labelled totals, explain their limits and invite
concerns about plant condition and missing records. A digital slide supports the spoken
reasoning; it cannot prove pronunciation, audience understanding or rehearsal duration.
Encourage discussion with relevant questions, responses and an honest summary. An open
question can invite explanation; a closed question can usefully confirm a detail or check
agreement. Neither is always superior. Invite a quiet participant’s view instead of treating
silence as approval. Summarise the proposed recommendation and unresolved checks, ask
whether the group accepts it, then seek the supervisor’s required approval before continuing.
A discussion that ends with an honest unresolved issue need not be a failure for everybody.
Vocabulary card meanings
presentation: A prepared talk given to an audience.
Speech functions: The jobs language does, such as agreeing, asking or refusing.
Selective listening: Listening only for the information the task asks for.
Discourse markers: Words that show how a talk is organised, such as first or however.
chart type: The kind of diagram, such as a bar chart or a line graph.
passive voice: A verb form that puts the receiver of the action before the verb.