Writing a Scientific Explanation
Write a scientific explanation that connects an observed result to a relevant mechanism.
Worked model: Writing a Scientific Explanation
View the illustrated activity card
- 1Write a scientific explanation that connects an observed result to a relevant mechanism
- 2Identify the mechanism that connects the cause to the result
- 3Build a cause → mechanism → consequence chain
- 4Write the explanation and reject a because ending that merely repeats the result
A trolley accelerates forwards because the forward force exceeds the opposing force, producing a forward resultant force. “It accelerates because it goes faster” does not explain the cause.
Teach the move
Prepare · 5 minutes
Choose a phenomenon and the mechanism needed to explain it.
- 1
Write a scientific explanation that connects an observed result to a relevant mechanism.
- 2
Identify the mechanism that connects the cause to the result.
- 3
Build a cause → mechanism → consequence chain.
- 4
Write the explanation and reject a because ending that merely repeats the result.
EAL upgrade
Remove the arrow chain and ask for the mechanism in the learner’s own wording.
Keep the subject challenge. Offer one model, visual or language prompt where needed, then check a fresh independent response.
Try it tomorrow
Choose a phenomenon and the mechanism needed to explain it.
Write a scientific explanation that connects an observed result to a relevant mechanism. Identify the mechanism that connects the cause to the result.
Change one condition or evidence item and ask whether the proposed mechanism still supports the explanation.
Remove the arrow chain and ask for the mechanism in the learner’s own wording.
What to look for
Change one condition or evidence item and ask whether the proposed mechanism still supports the explanation.
Teacher language
Adapt these prompts to the task and your learners.
Our purpose is: Write a scientific explanation that connects an observed result to a relevant mechanism.
What connects the cause to the result?
Try the new case on your own. Show the detail or reasoning that supports your answer.
Which support do you still need, and which part can you now do independently?
Across subjects
Maths: explain why an operation preserves equality. Humanities: explain how a cause contributed to an outcome.
Adjust language support
Use a small word bank, visuals and partner rehearsal when needed. Extend with precise explanations and qualifications. Judge the support from the response to this task.