Key Milestones (6–12 Months)
6–9 Months
- Sits without support. Most babies can sit steadily on their own by around 6–7 months, freeing both hands for reaching and exploring objects.
- Begins to crawl. Between 7 and 9 months many babies start crawling, rocking on hands and knees, or scooting, building the coordination needed for later walking.
- Looks for hidden objects (object permanence). When a toy is covered with a cloth, the baby will try to uncover it—a sign that the concept of object permanence is developing.
- Understands "no." Babies begin to respond to simple verbal cues and recognize tone of voice, showing early receptive language skills.
- Bangs two things together. Deliberately striking objects against each other demonstrates growing hand-eye coordination and an interest in cause and effect.
- Plays peek-a-boo. Engaging in back-and-forth social games reflects advances in memory, anticipation, and social connection.
9–12 Months
- Pulls to stand. Using furniture or a caregiver's hands, babies pull themselves upright, strengthening leg muscles and balance in preparation for walking.
- Uses a pincer grasp. Picking up small items between thumb and forefinger marks a major fine-motor milestone and supports self-feeding skills.
- Points at things. Pointing is an important pre-language skill that shows a baby can direct another person's attention to an object or event of interest.
- May say "mama" or "dada" with meaning. Around 12 months, many babies use one or two words intentionally, connecting specific sounds to specific people.
Activities for Cognitive Development
Object Permanence Games
Place a favorite toy under a blanket or behind a pillow and encourage the baby to find it. Start with a partially hidden toy and gradually cover it completely as the baby's understanding grows.
Cognitive skill supported: Object permanence — learning that objects continue to exist even when they cannot be seen. This is a foundational concept for memory and problem-solving.
Container Play
Provide a bucket, bowl, or box along with a collection of safe, graspable items. Babies will practice putting objects in, dumping them out, and repeating the process many times over.
Cognitive skill supported: Spatial reasoning and early math concepts — understanding "in," "out," "full," and "empty" while refining hand-eye coordination and voluntary release of objects.
Cause-and-Effect Toys
Offer toys where an action produces a predictable result — pressing a button that triggers a sound, pushing a lever that makes a character pop up, or dropping a ball down a ramp. Let the baby experiment independently.
Cognitive skill supported: Causal thinking — understanding that specific actions lead to specific outcomes, which builds the foundation for logical reasoning and scientific thinking.
Simple Sign Language
Introduce basic signs for common words such as "more," "all done," "milk," and "eat." Use the sign consistently while saying the word aloud during everyday routines like meals and play.
Cognitive skill supported: Early communication and language development — giving babies a way to express needs before spoken language emerges, which can reduce frustration and strengthen the connection between symbols and meaning.
Stacking and Nesting
Provide nesting cups or stacking rings and demonstrate placing them in order. At this age, babies will mostly enjoy knocking stacks over and exploring how pieces fit inside one another.
Cognitive skill supported: Size discrimination, sequencing, and problem-solving — comparing objects by size, learning order, and figuring out which piece fits where.
Every child develops at their own pace. The milestones and activities described here are general guidelines based on CDC and AAP recommendations. Consult your pediatrician with any concerns about your child's development.