Lesson 6 of 11
Still going
Show on a big screenTwo ideas about the tap still fit every record. How do you choose between them?
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The idea
A test tells two ideas apart only if they expect different things. Each idea says what a test will show. That is what it expects.
Step 1 of 4
- Two ideas still standing.
- A proposed morning: both expect the tap to run slowly. It cannot tell them apart.
- Another morning: one expects slow, the other expects normal.
- They expect different things. This one tells them apart.
Even a good test can raise new questions. Science continues.
Try the lab to finish this lesson.