Defining Topic for Investigative Study

1
Defining Topic for Investigative Study

• Life Saver Investigation

2
Life Saver Investigation

• Question
• How long does it take for a Life Saver to
  dissolve in the mouth?

3
Life 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?

4
Life 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?
• ..........

5
Life 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?

6
Life Saver Investigation

• A good question should be one that is
• Well-defined
• Measurable
• Controllable

7
Life Saver Investigation

• The End