Thesis Statement Lab
Pick a prompt, sort each candidate thesis as weak or strong, then reveal the expert rationale. Switch to Challenge mode to draft your own thesis and get live feedback against a 4-part rubric.
Guided Experiment: Sort the Thesis Statements
Hypothesis
Setup
Run Experiment
Analyze
Conclude
Which candidate thesis do you predict is the strongest, and why?
Write your hypothesis in the Lab Report panel, then click Next.
Controls
Prompt
Should national governments regulate carbon emissions from heavy industry?
"I think carbon emissions are a big problem for the environment."
"Is carbon regulation a good idea?"
"Because industrial regulation reduces long-term healthcare costs more effectively than voluntary emissions pledges, national governments should mandate carbon caps on heavy industry."
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Reference Guide
The 4-Part Thesis Rubric
- Specific. Names the exact claim instead of restating the topic.
- Arguable. A reasonable reader could disagree with it.
- Evidence-supportable. Gives a reason that can be backed up with evidence.
- Appropriately scoped. Narrow enough to argue in one essay, not a whole book.
How to Use This Lab
- Pick a prompt and a difficulty level.
- Mark each candidate thesis as weak or strong.
- Reveal the rationale and compare it to your sort.
- Try Challenge mode to draft your own thesis and check it live.
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