Timeline of the average physical development milestones from birth until around 10 years old By ocpsstudent.1 Period: 2000 BCE to 1995 BCE Lifts head when on tummy, grasps objects, turns head towards sounds. 1998 Stands alone, takes first steps, picks up small objects with thumb and finger. 1999 Sits without support, crawls, pulls up to stand. Jan 1, 2000 Walks independently, begins to run, scribbles with crayon. Apr 1, 2000 Rolls over, sits with support, reaches for objects and grabs them. Jan 2, 2002 Climbs stairs with help, kicks a ball, builds tower of 4 blocks. Apr 2, 2005 Skips, swings, and climbs well, starts learning to write letters and numbers. Jan 1, 2006 Rides a bicycle, ties shoelaces, prints some letters and numbers. Jan 1, 2008 Masters basic sports skills (e.g., swimming, soccer), shows more control in writing and drawing. Jan 9, 2010 Refines motor skills, engages in complex physical activities (e.g., gymnastics, team sports). Jan 1, 2024 Hops on one foot, catches a bounced ball, draws a person with 2-4 body parts.