Rocket needs to know how many days are in a week for the mission plan.
"I will just guess," he says. "Eight?"
Raven points to the wall. "What do you notice hanging right there?"
Rocket sees the station calendar.
Nova blinks. "Which would you trust more," she asks, "a guess or that calendar?"
A trusted source is a careful place to check facts.
A calendar is a trusted source for days and months.
A ruler is a trusted source for how long something is.
A library book, a teacher or a grown-up at home can help too.
Counting things yourself is a great way to check.
| Question | A trusted way to check |
|---|---|
| How many days are in a week? | a calendar |
| How long is this pencil? | a ruler |
| How many photos did we take? | count them |
| Is this fact in my science book true? | ask a teacher or grown-up |
Good fact checkers use more than one source when they can.
If two careful sources agree, you can feel more sure.
If they disagree, ask a grown-up to help you look closer.
| Statement | True or false? |
|---|---|
| A calendar is a trusted source for days of the week. | ? |
| A guess is as good as a trusted source. | ? |
| Counting things yourself can check a number. | ? |
| If two sources disagree, ask a grown-up to help. | ? |
You know where to look! Tomorrow you run a Fact Check Station in the Explorer Lab.