Check the record — Data, 4–6 years
Before using data, we check that each thing was recorded once and that nothing important is missing.
A record needs a check
Data is a record made by someone, so it can contain a missed thing or an extra mark. Checking means looking again for gaps, doubles, and unclear notes. A checked record is easier to trust than one accepted without looking.
Why check it?
A number can look exact even when the record behind it is not. People learned to check data because one missed child, counted twice, can change an answer. Looking again is not wasting time: it protects the meaning of the result.
Check the children
Four children are in a picture: Ana, Ben, Cora, and Dan. A note says “Ana, Ben, Ben, Dan”. First match each name with the picture. Ben appears twice and Cora is missing. Remove the extra Ben and add Cora, so the checked list has four different children.
A tidy record can still be wrong
A reasonable mistake is to trust writing just because it is neat and easy to read. Neat marks show how the record looks, not whether every thing was seen and written once. Compare it with the real objects or people, and ask whether any entry is missing or repeated.
Checking everyday lists
A shop checks that every item in a delivery is on its list. A teacher checks who is present, and a family checks that nobody is missed when counting people for dinner. In each case, a second look helps the record match what is really there.
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