How many words do you have?

I would have said that most English-speaking children aged 8 know the meanings of a great many more words than this. Probably somewhere in the region of 20,000 at least. It is true that the number of words they would actually use themselves when speaking or writing will be a lot less and may be something of the order you quoted, though many adults use less than 10,000 words in normal everyday communication. Assessing a person's vocabulary depends a great deal on what list of words you use, how you define 'basic', 'high, medium and low frequency' words and whether you are testing for words which a person would use themselves, or words they might understand in speech or in reading. Whether the testing is based on actual individual words or on word 'families' (that is, different forms Of course, all such testing must be done by sampling and then estimating the total number of words a a person might be expected to know. Also, the number of words someone of a particular age might be expected to recognise will depend a great deal on their environment and how much they are exposed to language, both spoken and written. Most children in English-speaking countries begin to learn to read at about four or five years of age and become reasonably fluent and competent by the time they are seven or eight. There will still be quite a lot of words which they can read well enough but which they do not yet understand. If you care to read it, the following study of secondary school children in New Zealand (ages 13 to 18) has a great deal of useful and interesting information:

where is the link to that article? i'm curious and would like to read it too.

It looks fake.

It could be a fake news story since 7000-8000 words that kid know today sound out of reach.

That's nice . I think it's possible .

Nothing is impossible, so, true.

I think that case be possible if the child's parents helping to learn each day new words