Worksheets show children what a letter looks like. This shows them how it moves.
A worksheet is a finished picture. It tells a child nothing about where the pencil starts, which way it travels, or how the stroke flows.
Place the marble on the starting dot. The child pushes. The marble runs the letter path exactly the way a pen would — every time, in the right order, without an adult standing over them.
That's the difference between copying a letter and learning one.
