Month 4

Mental Development
- Babble regularly, using rhythms and inflections
- Display curiosity about new things and sensations
Visual Development
- Respond to a full range of colours and shades
- Be able to follow faster movements with their eyes
- See nearby objects and reach for them
Growth
- Weigh about 6.4 kg if she’s a girl or about 7.0 kg if he’s a boy
- Be about 62.1 cm tall if she’s a girl or about 63.9 cm tall if he’s a boy
Motor Development
- Be able to hold up their head and chest while using their elbows for support
- Be able to bring their thumbs and small objects to their mouth
- Be able to hold their head steady while being pulled to a sitting position
- Start to roll over from stomach to back
Social and Emotional Development
- Start to show dislikes by turning away from unwelcome things
- Have a variety of facial expressions to show their feelings