Motor Skill Development: 4 to 9 months
| Average | Range | |
|---|---|---|
| Rolls from back to side | 4,5 months | 2 to 7 months |
| Sits without help | 7 months | 5 to 11 months |
| Crawls | 7 months | 5 to 11 months |
| Pulls to stand | 8 months | 5 to 12 months |
| Plays pat a cake | 9 months | 7 to 15 months |