- gerile
16902
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2019-08-27 10:20
1116
4
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JPiaget J J S Bruner 1946 5% 10% 20% 30% 50 % 70% 90% 30% 30%
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1986 300 5000 12000 12000 23000 2000-3000 8000-9000 4000-4500 6000 8000-12000 80000 3500 3000 1000 2000 3000 3500
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2018 1
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2019-09-26
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2019-09-23