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LAB · MIDDLE SCHOOL (6–8)

The Invisible Home Investigator

Radon is a radioactive gas that's invisible, odorless, and seeps up from the ground. You can't see it, smell it, or guess your way to safety — you have to test. Your job: investigate this town.

0/12
Homes tested
0
High results (≥ 4 pCi/L)
0
Mitigated
0/4
Badges

Greenfield Town map

Tap a home to investigate. Color shows your test result, not its hidden truth.

Untested Safe / mitigated (< 4) High (≥ 4 pCi/L) On priority list

🎯 Final challenge — town safety plan

Based on what you found, which homes should the town test first next year? Add 3–5 homes to your priority list and write one sentence explaining your reasoning.

Big idea: Some homes you'd expect to be risky (old basement) were fine. Some new slab homes had high radon. The clues matter — but only testing tells the truth.