Bilateral Coordination & Midline Crossing

Bilateral coordination and midline crossing are important foundational skills that help children use both sides of their body together in a coordinated way. These skills are essential for everyday tasks like handwriting, cutting with scissors, dressing, playing sports, and participating confidently in physical activities.

Why it matters:

• Supports handwriting and drawing (using both hands together, holding paper with one hand while writing with the other).

• Helps with dressing skills, like putting on shoes or buttoning.

• Important for gross motor activities such as catching, throwing, kicking, and climbing.

• Supports functional independence in everyday tasks and sports participation.

Red flags to look out for:

• Difficulty using both hands together (e.g., holding paper while cutting, opening containers, or catching a ball).

• Avoiding tasks that require coordination, like climbing, jumping, or using playground equipment.

• Difficulty crossing the midline, such as reaching across the body to pick up toys or write on the other side of a page.

• Appears clumsy, drops objects frequently, or struggles with bilateral tasks like tying shoelaces or buttoning.

• Hand preference develops very early or is very rigid, suggesting limited bilateral integration.

How OT supports these skills:

• Play-based activities that require two hands working together, like building with blocks, threading beads, or catching and throwing balls.

• Gross motor games that encourage crossing the midline, like climbing ladders, crawling through tunnels, or touching opposite toes.

• Fine motor activities, such as drawing, colouring, or manipulating playdough, that require coordinated hand movements across the body.

Everyday examples:

• Home: Opening containers, putting on clothes, or helping with cooking tasks like stirring or rolling dough.

• School: Handwriting, cutting with scissors, using a ruler, or participating in classroom games.

• Community/Sports: Playing catch, riding a bike, climbing playground equipment, or team sports that require coordinated movements.