Scientific method / Hypothesis examples / Dedicated lab room

A holographic if-then-because card connects a changed lamp distance to plant height and a scientific reason involving photosynthesis. — A complete hypothesis states the condition being changed, predicts a measurable outcome, and gives a reason grounded in scientific ideas.

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SCIENTIFIC METHOD · GRADES 5–12

Repair a weak hypothesis

INVESTIGATION QUESTIONWhich prediction names a change, a measurable result, and a scientific reason?

● ILLUSTRATIVE SCIENCE MODEL

ENGLISH CAPTIONS

Name a comparison, measured outcome, and test period, avoid vague preferences.

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01 / SCIENCE

What explains the result?

A strong hypothesis identifies what changes, what measurable response is expected, and why that relationship is plausible.

02 / EVERYDAY CONNECTION

Where does this matter?

Improving predictions helps students design fair tests and helps research teams make assumptions explicit.

03 / MODEL LIMIT

What should you keep in mind?

A well-written hypothesis can still be unsupported; only suitable data can evaluate it.

Continue to the interactive experiment ↓

Two matched seedlings at different lamp distances are measured with rulers beside a holographic height graph. — Specify how the independent variable will differ and exactly how the dependent variable will be measured; a prediction does not guarantee that outcome.

YOUR TASK

Which prediction names a change, a measurable result, and a scientific reason?

Repair a weak hypothesis: experiment-specific laboratory scene

READ THE BENCH CARD

Choose the strongest testable prediction

Compare three candidate statements and choose one with a factor, measurable response, and reason. A well-written hypothesis can still be unsupported; only suitable data can evaluate it.

MATERIALS / DATAWeak claim cards · Variable cards · Because-and-evidence cards

PREDICTION REVIEW · BEAN SEEDSChoose the claim another team could actually test.

Candidate statements

WHAT TO TAKE AWAY

A strong hypothesis identifies what changes, what measurable response is expected, and why that relationship is plausible.

WHERE THIS IS USED

Improving predictions helps students design fair tests and helps research teams make assumptions explicit.

MODEL LIMIT A well-written hypothesis can still be unsupported; only suitable data can evaluate it. The activities on this page do not store classroom measurements.

A student compares a holographic plant-height prediction graph with observed data points in a lab notebook. — After collecting data, compare the observed pattern with the prediction and revise the next question without treating a hypothesis as proven fact.