10-11 12-13 accessibility activity appearance arts bavaria bonding book built candid carefree casual caucasian cheerful child childhood children clothing color communication computer connection content convenience culture day device differential digital e-mail electronic enjoyment entertainment europe expression feature females focus friendship front full fun german germany girls happiness headphones holding horizontal image information interactivity internet jeans joy leaning leisure length lifestyles listening looking mobile munich music net networking online only outdoors people phone photography playground portability portable positive pre-adolescent real relaxation satisfaction sensitive sitting smile smiling social structure surfing tablet technology three togetherness toothy touch using video view wall-building watching wireless wood-material years