Kids Play 15 - Colours

It's difficult to teach Hadri about colours when he was two and a half.
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Me (pointing to a leaf): Hadri, this colour is green. Now what is the colour?
Hadri: Colour.
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Me: No, I mean, what is the colour? The colour... is it 'green', 'blue' or 'red'?
Hadri: Colour.
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Haiz. I was a little concerned. It is one thing getting confused with colours, but yet another not understanding even the concept of colours!!! Alarms!!!
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As we strolled down the path in the woods, I saw some bramberries and decided to use them to illustrate to Hadri.
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Me (pointing to the black bramberries and very slowly...): Now this bramberry is BLACK.
Hadri (suddenly interested): Yes, black ones can be eaten, red ones can't be!
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I was stunned and speechless! So he knew it all along!!! It all comes down to 'motivation' isn't it?
Sometimes I wonder what goes on in their little heads.
It would be wonderful if we know exactly what goes on.
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Bramberries.