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அரட்டைக்குச் செல்https://www.newsmirror.net/online_features/education/are-calculators-good-or-bad-for-helping-kids-learn-math/article_c11d5b7b-00dc-5810-8066-30edea2de770.html
https://www.newsmirror.net/online_features/education/are-calculators-good-or-bad-for-helping-kids-learn-math/article_c11d5b7b-00dc-5810-8066-30edea2de770.html