child, right-handed schoolchild hesitantly solves difficult task of adding numbers, 5th grade student writes down numbers in

5th abilities adding ambidexter calligraphy caucasian child childhood concept development difficult distance down education elementary example grade hand hesitantly home homework knowledge learn learning lessons lifestyle math mathematical mistakes notebook numbers paper pen people person right-handed righthanded routine school schoolboy schoolchild schooling solves student study table task word work workspace writes writing written young