In, Out, Upside Down — The Nesting Bowl Game

For babies around 7.5 months old · Fine Motor Skills · Spatial Reasoning · Containment Play

Why this week matters

At around seven and a half months, your baby is becoming a small scientist of space. How does one thing fit inside another? What happens when I turn a bowl upside down? Why does the small katori disappear into the big one? This fascination with "in and out" — sometimes called the containment schema — is how babies build their first real understanding of size, volume, and spatial relationships. The kitchen shelf suddenly becomes the most interesting place in the house, and that is exactly as it should be.

This week's activity: The katori treasure stack

You'll need: Three or four steel katoris or plastic bowls of different sizes, a small soft toy or cloth ball, and a floor mat where baby can sit with support if needed.

Place the bowls in front of your seated baby, nested inside each other. Pause and let them investigate — pulling the stack apart is the first joy of the game.
Once the bowls are scattered, slowly nest two of them back together while baby watches: "The small one goes IN. Where did it go?"
Hide the soft toy under an upside-down bowl and lift it with a dramatic "There it is!" This adds a little object-permanence magic to the play.
Offer the biggest bowl and the smallest bowl and see what baby does. Trying, failing, and trying again to fit one into the other is the real learning — resist the urge to fix it for them.
End with a mini drum finale: bowls upside down, palms tapping the bottoms. In, out, and now — sound!

Make it your own: During bath time, float two katoris in the water and let baby fill and pour. Or hand baby one bowl and a large wooden spoon at dinner-prep time so they can "cook" beside you while you work.

What your baby is learning

Spatial reasoning — figuring out what fits inside what is your baby's first lesson in size and volume, long before they know the words "big" and "small".
Fine motor control — grasping, releasing, and placing bowls with growing precision strengthens the hand skills needed for self-feeding and, much later, writing.
Object permanence — the toy under the bowl still exists even when it cannot be seen; every reveal strengthens this powerful new idea.
Persistence — nesting takes many tries. Each attempt teaches your baby that effort leads to success.

Make it easier with Kizoplay

Nesting and Stacking Bowl — ₹849. Smooth wooden bowls in graduated sizes — made for exactly this week's in, out, and upside-down explorations, and they grow into a stacking toy later. Shop now →

Good to know

Stay close during play, use bowls that are too big to fit in the mouth, and check plastic bowls for cracks or sharp edges. If your baby is not yet sitting steadily, do this activity with them supported between your legs or lying on their tummy. As always, every baby develops at their own pace — some will nest bowls this week, others will happily bang and mouth them for a few more weeks. Both are wonderful, valid ways to learn.

This is Week 31 of the Kizoplay 52-Week Play Series — one simple, science-backed activity for every week of your baby's first year. Explore all our Montessori play kits at kizoplay.com.