baby development stages milestones first one year . child milestones of first year

activity age baby birth care center child childcare childhood children classroom collection color colorful crawling creative creativity development early education educational first girl graph graphic group grow growing growth health human icon illustration infant info infographic information intellect isolated kid kindergarten learn learning little logo milestones month mother motor newborn nursery one preschool preschooler process progress rolling school sitting skills stages standing step timeline toddler training vector walking year young