Eighteen to twenty-four months is a period of rich development and, often, rich difficulty. The toddler in this phase is grappling with desires that exceed their abilities, language that is growing rapidly but cannot yet fully express their inner world, and a drive for independence that frequently collides with the reality of what they can safely do alone. Play that meets them where they are – active, exploratory, and increasingly self-directed – supports development and channelled energy.
Healthbooq covers toddler development and play activities through the early years.
The Developmental Landscape at 18-24 Months
By 18 months, most toddlers are walking confidently and beginning to run. Balance and coordination improve through this period; climbing stairs (with hand-holding) is typically achieved by 18-24 months.
The language explosion – sometimes called the vocabulary burst – typically occurs somewhere in this window. A child who has had 20-50 words at 18 months may reach 150-300 words by 24 months and begin combining two words into simple phrases ("more milk", "daddy go", "no shoes"). Research by Eve Clark at Stanford University on early word learning has documented this rapid acquisition pattern and its relationship to the development of conceptual categories.
Pretend play becomes more complex and sustained. Where the 12-15-month-old performed single symbolic acts (offering a spoon to a doll), the 18-24-month-old may create short sequences: put the doll to bed, then bring a blanket, then say "shhh". This sequential pretend play indicates developing narrative understanding and theory of mind – the emerging capacity to understand other perspectives.
Active Physical Play
Running, jumping (usually from 24 months), climbing, and ball play are all appropriate and important activities. Outdoor space is the ideal environment: grass, uneven ground, slopes, and obstacles provide natural physical challenges that develop balance and proprioception.
Simple obstacle courses – a line of cushions to jump between, a low balance beam (plank on the floor), a tunnel to crawl through – are engaging and develop gross motor skills without requiring specialist equipment.
Messy Play
The 18-24-month-old is ready for more complex sensory experiences. Messy play – sand, water, playdough, paint, oats, rice, pasta – is deeply engaging and developmentally rich. The tolerance for mess in the adult determines how much of this is offered; having a dedicated messy play area or a waterproof mat under a high chair expands what is feasible.
Water play: filling and emptying containers, pouring from one vessel to another, using spoons and cups in a water tray. Simple and absorbing.
Playdough: rolling, poking, flattening, cutting with plastic cutters. Playdough develops fine motor skills and is an early form of creative making.
Sand: a sandpit, or even a tray of dry rice or oats indoors, provides similar filling, pouring, and moulding opportunities.
Research by Lawrence Rosenblum at the University of California, Riverside, on multisensory learning in development supports the value of rich sensory experiences in this period for cognitive development.
Language-Rich Play
Play at this age should be saturated with language. Running commentary during play, naming objects and actions, asking simple questions, reading stories with expression, and repeating words frequently all support the vocabulary burst occurring in this window.
Board books that tell simple stories (rather than just naming objects) become appropriate. Interactive books with choices ("do you want the dog or the cat?") encourage participation. At 18-24 months, children often "read" familiar books from memory – reciting phrases or making the sounds associated with pictures – which is a significant literacy milestone called dialogic reading.
First Arts and Crafts
Scribbling begins in earnest at around 18 months, progressing from random marks to more deliberate circles and crosses by 24 months. Large crayons, finger paints (in small amounts, supervised), and large paper on the floor or table are appropriate. The value is process, not product: the marks made are irrelevant to the developmental benefit.
Key Takeaways
Between 18 and 24 months, toddlers develop more complex pretend play, more sophisticated language (two-word combinations emerging by 18-24 months; vocabulary explosion often occurring), and greater capacity for self-directed play. They are also navigating increasing independence and the emotional intensity that accompanies it – tantrums, frustration, and the desire to do everything 'by myself'. Play activities that support autonomy and self-direction, that allow for messy exploration, and that are open-ended (where the child determines the direction) are particularly valuable at this stage.
