Crossing the midline is vital to the development of using both sides of the body together, such as putting on shoes and socks, writing and cutting. It promotes the coordination and communication of the left and right hemispheres of the brain. The midline is an imaginary line down the centre of the body.
The child moves the discs onto the peg.
Place the board so the child will crosses the midline doing this.
The peg is moved off the board to a place where the child has to cross the midline to place all four discs on the peg.
Repeat for both sides.
Store the exercise on the board.
The exercise fits on the 20×30 tray.