1. Make Observe an event. State only what we can
or .
2. Ask
Ask a question that helps us find out and the event happened. We must be
able to answer the question with , or . We may need to our question several times before it is.
3. Construct a
State the answer we think we’ll get when we ask
our question. This is called a
. It’s based on our best
understanding of the event.
4. Test the hypothesis with an

Test whether the hypothesis is .
During the investigation, we collect that
answers the testable question we asked.