Lesson 1 of 8
A sure answer is not a true answer
Show on a big screenA machine writes a calm answer about the school tank. Is it true? A notice on the corridor board describes the tank.
Step 1 of 4
- A calm answer arrives. It sounds sure.
- Pick out one claim.
- Look for it in the notice.
- Line 2 says the same. The notice backs the claim.
You cannot tell from how sure the answer sounds. Check it against the notice.
The rule
A claim is one thing an answer says. It can be true or false. Evidence is a reason to believe a claim.
Sounding certain is not evidence. Look for the claim in the notice. It says this, or the opposite, or nothing.
| Line | What the notice says |
|---|---|
| 1 | The rainwater tank was put in four years ago. |
| 2 | It holds 5000 litres when it is full. |
| 3 | One pipe from the corridor roof feeds it. Nothing else does. |
| 4 | Two Class 8 monitors empty the filter box every Saturday. |
| 5 | The tank fills in June. It is usually empty by February. |
| 6 | The water is for the garden beds and for washing the veranda. |
The notice never mentions drinking. So it says nothing about drinking water.
Watch out!
Do not read silence as a yes. If the notice says nothing, the claim is not proven.
When a claim really matters, ask a trusted adult. Do not drink tank water.
Tap what the notice does with each claim.
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Try the lab to finish this lesson.