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🔎 Drawing Conclusions from Evidence

A conclusion is not just a guess — it's an answer you can back up with what you actually saw. This course teaches young scientists to turn a wonder into a question they can check, to trust evidence ov

6
lessons
~30 min
to learn
🔬 Science
subject
Adults
level
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What you’ll learn

  1. A Question You Can CheckDistinguish a testable, checkable question from an opinion that cannot be answered by observation.Science begins by turning a wonder into a question you can check by looking, measuring, or trying it out. Questions like 'which plant grows taller in sunlight?' are testable; matters of taste or feeling ('which flavor is best?') are opinions with no answer to measure.
  2. Evidence Is What You SeeUnderstand evidence as what actually happened and can be shown to others — not what one hoped or felt.Evidence is observable and shareable: a ruler reading, a photo, a recorded number. Hopes and feelings are not evidence. Good scientists keep their wishes separate from their data and let only the evidence decide.
  3. Look for the PatternRecognize that a result which repeats across trials (a pattern) is stronger evidence than a single result.One result can be luck. When the same outcome appears again and again across repeated tests, it forms a pattern — far stronger support for a conclusion. Before deciding, ask whether it happens every time.
  4. Draw the ConclusionWrite a conclusion that answers the original question and cites the supporting evidence.A conclusion is an answer backed by evidence, expressed as 'I think ___ because ___.' Following the steps — question, prediction, fair test, evidence, conclusion — leads to an answer you can defend by pointing to what you observed.
  5. Check It AgainExplain why repeating a test and gathering more data makes a conclusion more trustworthy.A single test can be misled by luck or an unfair start. Repeating the test, using more samples, measuring carefully, recording results, and having others check them all strengthen a conclusion. More consistent evidence means more confidence.
  6. Change Your MindValue revising a conclusion when evidence disagrees, and avoid assuming that things happening together prove one caused the other.The scientific response to surprising evidence is to change your mind and follow it. Learners also meet, at an age-appropriate level, the idea that two things rising together (ice cream sales and sunburns) may share a hidden common cause (hot sunny weather) rather than one causing the other.

Questions this course answers

Which of these is a question a scientist could actually check?

You can pour the same water on each and see which soaks up more — that's checkable. The others are opinions, where everyone's answer can be different.

Your plant looks taller and you hoped it would win. What counts as evidence?

Evidence is something you can point to and show someone else, like a ruler measurement. Hopes and feelings are not evidence.

Why is getting the same result in three tests better than getting it once?

A single result could be luck. When the same thing happens again and again, it forms a pattern — much stronger evidence for your conclusion.

What makes a good conclusion different from a plain guess?

A conclusion answers your question and shows the evidence behind it. The 'because' part — the evidence — is what turns a guess into a real conclusion.

In summer, ice cream sales and sunburns both go up. What's the smart way to think about it?

Two things rising together doesn't mean one caused the other. Here, hot sunny weather is the hidden cause behind both the ice cream and the sunburns.

You predicted the shady plant would grow taller, but the evidence shows the sunny plant did. What should a good scientist do?

When evidence disagrees with your prediction, the scientific thing to do is change your mind and follow the evidence. That's how we learn something new.

Grounded in trusted sources

  • Next Generation Science Standards — Science and Engineering Practices (Analyzing and Interpreting Data; Engaging in Argument from Evidence)
  • National Science Teaching Association — guidance on evidence-based reasoning in elementary science

Every Wunder lesson is built from real, reputable sources — never invented.

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