Testable or Not Testable

1
Testable or Not Testable?

• Testable Questions need 2 parts
• A manipulated variable
• A responding variable

2
Testable or Not Testable?

• Is this a testable question?
• How does a paper airplane fly?
• No, because there is not a manipulated variable
  and a responding variable in the question.

3
Make the Question Testable

• To change the question so it is testable
• First list some variables that you could
  manipulate that are involved with flight of a
  paper airplane
• wing shape
• body shape
• type of paper used

4
Make the Question Testable

• Second, decide what you are going to measure
  (responding variable). For example
• Distance the plane will fly
• Length of time the plane stays in the air

5
Make the Question Testable

• Now, select one manipulated variable and one
  responding variable. Put them together to create
  the testable question. For example

• Does changing the shape of the
• wing affect the distance the
• paper airplane will fly?

• Does changing the shape of the
• body affect the length of time the
• paper airplane will stay in the
• air?

6
Testable Question Formats

• Here are some possible sentence starters to
  create a testable question.
• Does changing ________ affect ________?
• How does changing _____ affect ______ ?
• If I change ______ will it affect _______ ?