Popsugar Family Little Kids Developmental Milestones by Age Track Your Child's Progress With These Developmental Milestones by Age March 9, 2018 by Katy Fabrie View On One Page Photo 4 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 9 Months Important milestones: Stands while holding on Sits without support Can play peekaboo Uses finger to point at things Understands "no" Watches the path of different things as they fall Places things in mouth Related: 8 Cute Ways to Commemorate Your Baby's Monthly Milestones Without Stickers Previous Next Start Slideshow Little KidsBabiesParentingEducation