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Smiling happy little Caucasian boy learning to count with abacus
Cute Caucasian toddler boy having difficulties using the abacus
Angry Caucasian toddler boy making a tantrum and refusing to play with an abacus
Caucasian toddler boy feeling bored and tired while playing with abacus at kindergarten
Caucasian toddler boy feeling bored and tired while playing with abacus at kindergarten
Teacher get headache with two naughty kids in classroom at kindergarten
Teacher get headache with two naughty kids in classroom at kindergarten
Caucasian toddler boy feeling bored and tired while playing with abacus at kindergarten
The concept of the psychological health of preschool children
