little boy counting with help abacus mental arithmetic brain development |
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| navigate by keyword : abacus boy brain child classroom cognition cognitive concentration conceptual counting creativity culture curiosity determination education fascination focus fun futureready history imagination intelligence learning logical manipulation mathematics memory patience perseverance play preparation problemsolving school selfconfidence sense skill tactile thinking traditional visual |
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| Little boy Counting with help an abacus. Mental arithmetic, brain development. |
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