The development marker assessment that I would use is the CDCs Developmental Milestones chart found on the CDC website, as they are based on age in months and are found in print quite readily in clinics, in addition to a downloadable phone application (CDC, 2019). Considering that every child makes his or her milestones at slightly different times and this child is quite low on growth charts, this would be a rough gage for how this baby should present and I would begin testing the 6 month categories; can she makes vowel sounds, roll over, sit without contact guard, stand with assistance, etc (CDC, 2019). I would also test many of the 9 month milestones: does she make a lot of different sounds, point at things, mimic, use thumb and point finger to pincer food, get to a seated position alone, pull herself to standing position, and can she crawl (CDC, 2019)
