6-9 months

Montessori Education for Infant (6-9 months)

Six to nine months is when the Montessori infant becomes mobile. Crawling (or scooting, or army-crawling — the style doesn't matter) transforms the baby's relationship with the environment. They can now go to the thing that interests them rather than waiting for someone to bring it. In Montessori terms, this is the beginning of real independence. The prepared environment becomes critical now. In a Montessori home, the baby's movement area expands from the mat to an entire room (or a large section of a room) that has been thoroughly baby-proofed. Low shelves appear, holding two or three carefully chosen materials at a time. The baby can pull themselves toward the shelf, reach for an object, and take it to their mat to work with it. This is the earliest version of the "choose your own work" cycle that defines Montessori classrooms at every age. Solid food introduction also begins, and Montessori has specific opinions about it. The baby sits at a weaning table (a small, sturdy table and chair at their height) rather than a high chair, and is offered food in a small glass or ceramic dish (not plastic). They're given a small spoon and encouraged to feed themselves, however messy the result. A tiny open cup replaces the sippy cup. The principle: treat the baby as capable, give them real tools, and accept the mess as the cost of independence.

Key Montessori principles at this age

Movement is the engine of cognitive development. Once the baby can crawl, the brain gets exponentially more data to organize — spatial relationships, cause and effect, object permanence all accelerate.

Prepare the environment so the baby can choose. Two or three materials on a low shelf, rotated weekly, gives the mobile baby genuine agency for the first time.

The weaning table is about independence, not nutrition. Sitting upright at their own table, using real utensils, the baby practices self-feeding as a life skill.

Baby-proof the space, then trust the baby in it. A truly prepared environment doesn't need constant 'no' — everything the baby can reach is safe to touch and explore.

A typical Montessori day

The baby wakes and the parent changes and feeds them (by now, a mix of nursing/bottle and early solid foods). Morning alert time happens on the floor of the prepared area — the baby crawls to the shelf, selects an object (maybe the object permanence box, maybe the ball tracker), and works with it. The parent sits nearby, observing. When the baby loses interest, they might crawl to the mirror, pull up on a bar mounted along the wall, or explore a basket of objects. Mid-morning brings a snack at the weaning table — a few pieces of soft banana on a small plate, water in a tiny glass. The baby practices picking up food and bringing it to their mouth. Most of it ends up on the floor. That's expected. Late morning might be an outdoor excursion — crawling on grass, touching leaves and bark, watching insects. Afternoon includes a longer nap, another feeding cycle, and more floor time with different materials (the parent rotates the shelf selections). Evening routine: bath, pajamas, books (the baby now grabs pages and studies images), feeding, bed.

Montessori activities for Infant (6-9 months)

Object permanence box — a wooden box with a hole on top where the baby drops a ball, which disappears and rolls out a drawer below. The baby learns that objects continue to exist when out of sight.

Ball tracker (visual tracker) — a wooden ramp system where a ball rolls down graduated levels. The baby watches, then begins placing the ball at the top themselves.

Nesting and stacking cups — simple wooden or metal cups that fit inside each other. The baby explores size relationships through trial and error.

Pull-up bar (Montessori movement bar) — a sturdy horizontal bar mounted about 18 inches off the floor along a wall, giving the baby something safe to pull up on as they build standing strength

Weaning table meals — sitting at a low table with a small plate, a tiny pitcher of water, and finger foods. The baby practices hand-to-mouth coordination with real food.

Parent guidance

Baby-proofing is now your most important job. In Montessori, a truly prepared environment means the baby can move freely without hearing "no" every few minutes. Get on your hands and knees and look at the room from your baby's height. Cover outlets, secure furniture to walls, remove everything breakable or dangerous from the baby's reach. Then put a few interesting things at their level — a low shelf with two or three materials, a basket of safe objects, a mirror with a pull-up bar. The goal: when your baby crawls into this space, everything they can reach is something they're allowed to explore. This eliminates most power struggles and lets the baby concentrate on their real work — learning to move, manipulate objects, and make choices. For the weaning table, start simple. A small stool or low chair, a little table (even a sturdy cardboard box works), and one food item on a plate. Your baby will make a magnificent mess. That's not failure; it's practice. The sippy cup is probably the most controversial Montessori recommendation to skip — but try offering water in a tiny shot glass. Babies can learn to sip from an open cup far earlier than most parents expect.

Why Montessori works at this age

The prepared environment concept is at its most powerful here — a baby-proofed room with low shelves gives the crawling baby genuine autonomy
Object permanence materials are brilliantly designed and give the baby concrete experience with one of the most important cognitive concepts of the first year
The weaning table approach produces surprisingly independent eaters. Babies who self-feed from the start tend to have fewer food battles later.
Using real dishes and open cups, while messy, teaches the baby about real-world cause and effect in ways that plastic sippy cups can't

Limitations to consider

Not every family has a room they can dedicate as a prepared Montessori environment. Apartment living makes the low-shelf-and-floor-mat setup challenging.
The open cup and ceramic dish approach means broken dishes and spilled water on a daily basis. Some parents find this more stressful than educational.
Skipping the high chair in favor of a weaning table can be a safety concern — babies at this age can fall off low chairs
The approach requires significant baby-proofing investment and constant vigilance about what's at floor level

Frequently asked questions

When should I introduce the object permanence box?

Most babies are ready around 7-8 months, when they can sit steadily and have a reliable grasp. The first version is the simplest: a box with a hole on top and a tray where the ball emerges. Place the ball on top of the hole and let the baby push it in. They'll watch it disappear, then discover it in the tray. Over the first few sessions, you'll see the moment when understanding clicks — the baby starts looking at the tray before the ball emerges. That's object permanence developing in real time.

Do I have to skip the high chair entirely?

No. Plenty of Montessori-inspired families use a high chair for some meals and a weaning table for others. The principle matters more than the furniture: involve the baby in the meal, give them real food they can handle themselves, use real dishes when possible, and let them practice. If a high chair is safer and more practical for your family, use it — but pull the tray off and push the chair up to the family table so the baby eats with everyone else.

My baby keeps throwing things off the weaning table. How do I handle it?

They're not misbehaving — they're experimenting with gravity and cause and effect. At 6-9 months, dropping and throwing objects is serious cognitive work. The Montessori response: calmly pick it up and return it the first time. The second time, say 'It looks like you're finished' and clear the table. No anger, no lecture, no repeated retrievals. They'll learn quickly that throwing ends the meal. This same approach — one calm return, then done — works for all Montessori materials at this age.