Your 29-Month-Old: Balance, Detailed Drawings, and Longer Games
By the Growbaby team · Published Aug 4, 2026
Written against AAP, CDC and WHO guidance. How we write these guides
At a glance
- Narrow lines and kerbs get walked along on purpose.
- Drawings gain parts: a head with something attached to it.
- A rule-based game holds together longer before it collapses.
- The slightly bigger of two similar things gets picked out correctly.
- Arms come out for balance, then gradually stop being needed.
Kerbs, painted lines and the edges of paving slabs suddenly become routes worth following. Walking along something narrow is a challenge your child sets themselves, repeatedly, without anyone suggesting it.
Drawings gain detail beyond a single closed shape, games with rules survive longer before falling apart, and differences between similar objects get judged more finely.
What is new this month
Walking a line is a harder problem than crossing a room. The feet have to land inside a narrow track while the body corrects continuously, and the arms come out to help until they are needed less. Kerbs and painted lines supply the challenge for free, which is why the practice happens without any prompting. Some children take to narrow surfaces straight away and others spend months on kerbs first.
More detailed drawings show a change in what your child is trying to do. Rather than enjoying the marks themselves, they are attempting to represent something, so a circle acquires legs and the result gets defended as a person. Asking about a drawing rather than guessing at it keeps the intention theirs.
Sustaining a game with rules is a different matter from joining one. Staying in means remembering the rule while wanting to break it, tolerating a turn that belongs to someone else, and accepting an ending that may not go your way. Finer comparisons feed the same growing precision, since spotting that one of two similar things is slightly larger takes a real judgement rather than a glance.
Week by week, in the app
Our paediatric specialist wrote one thing to notice and one thing to try for every week of the first three years. Here is what this month covers. The app works out which week your child is in from their birth date and brings each one to you on the day.
- Week 122Your baby is Walking in Balance
- Week 123Your baby is Making Detailed Drawings
- Week 124Your baby is Sustaining Games with Rules
- Week 125Your baby is Comparing Objects
- Week 126Your baby is Asking "Why" Questions
This week, for your baby
Growbaby works out which week your baby is in from their birth date and brings that week's activity to you on the day, so you are not looking up where you are. Plus adaptive soothing for the nights and Growy for the questions in between.
This guide is for general informational purposes only. Growbaby is not a medical device and does not provide medical advice, diagnosis or treatment. Every baby develops at their own pace; for any question or concern about your baby's health or development, always consult your pediatrician or another qualified healthcare provider.