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Module 5: Scientific Investigations, Explain sample selection and sample…
Module 5: Scientific Investigations
Practical investigations to obtain primary data
IQ1. What initiates an investigation?
Reasons
for scientists to undertake investigations.
Finding relationships/patterns in phenomena
testing conclusion
s of a previous investigation
using scientific knowledge and understanding to make accurate predictions
Factors that led to investigations
Peptic ulcers (Marshall & Warren)
plant growth (Von Helmont)
microwaves (Spencer)
Determine
the
hypotheses
that were tested in
Marshall and Warren, Von Helmont and Spencer's experiments.
Describe
deviations from traditional methodology to test each hypothesis in Marshall and Warren, Von Helmont and Spencer's experiments.
Different Types of Scientific Investigations
IQ2: What type of methodology best suits a scientific investigation?
Evaluate
objectives and data collected by a scientist or team of scientists that includes: Marshall and Warren, Eratosthenes, Doppler, Priestly's oxygen experiment
Evaluate
the methodology of the investigations from the previous point.
Justify
the method chosen based on subject and context: experimental testing, fieldwork, locating and using information sources, conducting surveys and using modelling and simulations.
Evaluate
the relevance of the investigation by considering peer reviewed literature in the area of the study
Justify
the suitability of the data to be collected.
Reliability and Validity
Evaluate
the design of your investigation
Explain
the choice of your variables referring to the research question
Justify
the suitability of materials.
Assess
ethics when conducting the investigation
predict
an appropriate time frame
Justify
working individually/team
Collect valid and reliable primary data and analyse the data
Draw conclusion/s
and
suggest
further investigation/research by:
analysing
results and interpreting data,
justifying
the methodology and improvements needed,
describing
potential beneficial and harmful consequences when applied to real world scenario
Evaluate
the validity of the investigation.
Evaluate
the reliability by determining: consistency of the data, measures taken to reduce error.
Reporting
IQ4. What is the structure of an investigative report?
Review
peer-reviewed report for language used, purpose, presentation and structure, measures used to reduce error
Compare and contrast
structures and functions of a scientific investigation and its written report
Prepare
a written report
Explain
sample selection and sample size used to gather data