Evidence Supporting Ideas
Identify scientific evidence that has been used to support or refute ideas or arguments, evaluating the strength of evidence
What a learner can do afterwards
- Distinguish between a claim and the evidence supporting it
- Evaluate whether evidence is strong (fair test, multiple trials) or weak (single observation, no controls)
- Identify when evidence supports or refutes a scientific idea and explain why
The lesson
A claim is an idea someone says is true, like 'plants grow faster with music.' Evidence is the actual proof, the measurements or observations, that show whether the claim holds up.
Sam claims music helps plants grow. His evidence: one plant, played music for a week, grew 2 cm. That's a single plant with no comparison, so the evidence is weak.
Strong evidence comes from a fair test: compare a group that gets the change to one that doesn't, keep everything else the same, and repeat the trial several times. One example is never proof.
Strong evidence is fair and repeated, and it can support a claim or refute it.
Watch it
Where it sits
Where this leads
8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.