Touch play is any game where physical contact is the main line of connection: holding, roughhousing with body contact, hand games, or sitting close enough that the child can feel you there.

Physical settling, the most direct kind there is. The brainstem appears to respond to rhythm, movement and sensory input before words and reasoning can get in, and the need for body contact doesn't switch off when children start school. It looks for whatever outlet remains open.

Call-and-response play is any interaction where one person initiates and the other answers in a predictable pattern: clapping games, echo songs, copying sequences, or the simplest version of all, calling a child's name and waiting for them to look back.

Schools already run on call-and-response. The register is one: name called, answer given, every morning, and the child who never answers it is saying something.

Evidence that this adult is reliable, that their responses are consistent enough to build a predictive model on. This is how a nervous system constructs its map of whether an adult can be trusted, so the child who tests the same boundary repeatedly isn't being defiant. They may be gathering data. Unpredictable adults produce more of this testing, not less.

Collaborative play is any activity where two or more people work toward a shared goal with no winner and no loser: building something together, cooking, solving a puzzle as a team, or creating a story that belongs to everyone.

Balance of emotion through shared purpose. Seeking cooperative engagement is a normal human drive, not a deficit, and it becomes worth acting on when the need is so heightened or inflexible that the child can't access any learning without it.

A child who can't function alone but produces extraordinary work with a partner has a preference, not a dependency, and so does every adult who has ever said "can we just jump on a quick call about this?" instead of reading the email.

Silly play is any interaction where the point is laughter: deliberate absurdity, funny voices, exaggerated clumsiness, nonsense words, or doing something wrong on purpose until everyone falls apart.

Discharge of accumulated tension, particularly fear of authority, rules and the rigidity of a high-stakes environment. Laughter appears to function as a mechanism for physiological stress release, so the child who makes the class laugh when strictness arrives is settling the whole room as well as themselves. This child can be highly socially attuned, and often exhausted by it.

Power-reversal play is any game where the adult deliberately loses power and the child gains it: the child gives instructions, the adult pretends to be incompetent, or the child physically overpowers the adult who acts defeated.

Real agency in a system that feels controlling. The child is addressing powerlessness with the only strategy they have, and this is the most frequently misread play type in schools, because it directly disrupts learning and challenges adult authority, which tends to trigger counter-control responses that deepen the problem.

Child-led play is any activity where the child decides what happens and the adult follows without directing, correcting or steering: the child chooses the game, sets the rules, changes them mid-play. The adult's job is to be present and responsive. Don't direct. Don't hinder. Come.

Real self-determination: the experience of being the author of their own learning rather than the object of someone else's agenda. This is where intrinsic motivation lives.

Regression play is any interaction where a child is allowed to act younger than their age: being carried, fed, wrapped in a blanket, spoken to in a gentle voice, or playing baby games they outgrew years ago.

A return to an earlier developmental stage to retrieve something that was missed. This is going back to collect something, and in this framework, the child acting much younger than their age is signalling that something from an earlier developmental stage didn't fully land.

Separation play is any game built around going away and coming back: peekaboo, hide-and-seek, chase-and-return, or waving goodbye and reuniting with exaggerated delight.

Evidence that going away doesn't mean being lost, and that return is always possible and welcomed. The child is building a reliable map of the relationship, testing whether the safe base remains available after absence. Hence the unconditional welcome principle: the welcome comes before any conversation about the absence.

Symbolic play is any activity where objects, stories or characters stand in for real feelings: puppet shows, drawing, role-play with costumes, small-world figures acting out scenes, or stories where the dragon is really the thing the child cannot say out loud.

Every storytelling tradition on earth discovered the same thing. What could not be said directly was placed in a story, where it could be seen, acted upon and resolved. Children do the same.

The ability to externalise internal states: to place felt experience outside the self, where it can be seen, acted upon and resolved. What the child can't say, they draw. What they can't draw, they act. What they can't act, they write. The creative work is informative as well as expressive.

Sensory play is any activity where the body's senses are the primary engagement: water, sand, clay, movement, music, textures, or anything that lets the child settle through physical experience rather than words.

The world speaks through the senses, and the child who needs to touch, taste, smell, move and feel is seeking the sensory input their nervous system requires to settle enough to learn. The child rocking on their chair for the fourteenth time today is settling a nervous system that has been asked to sit still for longer than most adults manage in a meeting, and adults do the same in long meetings, with better camouflage.

Direct sensory input to settle the body's arousal level. Some children are sensory-seeking (they need more input to feel settled) and some are sensory-avoidant (they're overwhelmed by input others don't notice), and both are the nervous system looking for its balance point. Sensory play isn't a separate category from the other play types. It runs through all of them. But some children's primary need is sensory before it is relational, and for them the sensory need comes first.