Κατανόηση μαθηματικών εννοιών

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  • Age: 6-7 ετών
  • Age: 9-10 ετών
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The balance is achieved according to the principle of the lever, on the lever each end has a small plate, on one end you put the weight, on the other end you put the object to be weighed, the lever is equipped with a pointer, when both ends balance, both ends of the mass (weight) are equal.