00:17 duration 17 seconds
CHILD 210 Crawling
Unit 02 > Unit 02: Activities > U02 Observations in Development - Instructions > Clip 4
00:20 duration 20 seconds
CHILD 210 Sitting
Unit 02 > Unit 02: Activities > U02 Observations in Development - Instructions > Clip 3
00:15 duration 15 seconds
CHILD 210 Rolling Over
Unit 02 > Unit 02: Activities > U02 Observations in Development - Instructions > Clip 2
CHILD 210 Head Up
Unit 02: Activities > U02 Observations in Development - Instructions > Clip 1