Miller Function & Participation Scales (M-FUN)

A playful, hands-on way of seeing how a child's body skills carry them through the real moments of childhood — that is what the M-FUN was made to capture.

In short

The Miller Function & Participation Scales (M-FUN) is a standardised, play-based assessment used by occupational therapists and other trained professionals to understand how a young child's motor skills support their everyday participation — at home, in play and at preschool or school. It looks at three connected areas: fine-motor skills (the hands), gross-motor skills (the whole body) and visual-motor skills (how the eyes and hands work together). Rather than testing skills in isolation, the M-FUN links them to real participation, so the picture is about what a child can do and join in with, not simply what they cannot.

What the M-FUN assesses

The M-FUN is designed for children roughly in the preschool-to-early-school years and uses engaging, game-like tasks — drawing, cutting, threading, building, balancing, hopping and copying shapes — so a child shows their abilities naturally through play. From these tasks the therapist gathers information across:

• Fine-motor performance — using the hands for precise tasks such as holding a crayon, fastening, cutting or manipulating small objects.
• Gross-motor performance — using the larger muscles for balance, coordination, jumping and moving through space.
• Visual-motor integration — the teamwork between what the eyes see and what the hands do, for example copying a shape or staying within lines.

A distinctive strength of the M-FUN is that it pairs the child's hands-on performance with participation observations — including input from parents and teachers — about how those skills show up in daily routines, classroom activities and play. This helps a therapist understand not just a score, but how a child manages dressing, mealtimes, drawing and joining peers. It is one tool among several; findings are always interpreted alongside developmental history, observation and other measures by a qualified clinician.

When this kind of assessment helps

A structured motor and participation assessment may be suggested when a child finds pencil or scissor tasks effortful, tires quickly during physical play, seems clumsy or unsteady, struggles to keep up with classroom self-care, or when a parent or teacher notices the child holding back from activities their peers enjoy. The goal is to map strengths and gentle areas of need so that any support is precise, playful and built around the child's real day.

The Pinnacle way

This is general information, not a diagnosis — a clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care, never from an app or form. Our therapists may draw on tools like the M-FUN within a broader picture of how your child moves, plays and participates, then shape an individualised plan that can include occupational therapy and other supports as needed.

Trusted sources

The American Occupational Therapy and child-development guidance from the American Academy of Pediatrics and HealthyChildren on motor milestones and participation; WHO and CDC resources on early childhood motor development.

Next step — If you'd like to understand how your child's motor skills support their everyday play and learning, book a developmental assessment to map their strengths and start any helpful support early.