close up of children hands playing, assembling the colorful plastic railway track.

action applying assemble assembling associative automobiles benefit brain builds career children close cognitive colorful communicating concentration connect construction cooperative coordination creativity curiosity daily development dexterity engage experience experiment exploring friendships fun future grasping gross hands imagination kids kindergarten learning life lives motor physical plastic play playing playroom preschoolers pretend problemsolving railroad railway real selfsufficiency senses simulate skills social toys track train transportation vehicles