Defining Topic for Defining Topic for Investigative StudyInvestigative Study

“ “Life Saver” InvestigationLife Saver” Investigation

““Life Saver” InvestigationLife Saver” Investigation Question

How long does it take for a “Life Saver” to dissolve in the mouth?

““Life Saver” InvestigationLife Saver” Investigation• Is the time needed by all students the

same? What information does the statistics provide us with?

• What are the factors that affect the time taken for the “Life Saver” to dissolve in the mouth?

• Is this question “How long does it take for a “Life Saver” to dissolve in the mouth” a good question for a scientific investigation?

““Life Saver” InvestigationLife Saver” Investigation• Whether the “Life Saver” is chewed?• Whether it is moved in the mouth?• How much is it moved?• How much saliva is produced in the

mouth?• Does the student like the flavour?• What is the pH in the mouth?• What is the temperature in the mouth?• ..........

““Life Saver” InvestigationLife Saver” Investigation• What are the criteria for a good

question for a scientific investigation?

• How would you modify the question above so that is becomes a good question for a scientific investigation?

““Life Saver” InvestigationLife Saver” InvestigationA good question should be one that is:

• Well-defined

• Measurable

• Controllable

““Life Saver” InvestigationLife Saver” Investigation

The EndThe End