Coloring is a favorite activity, and here it becomes a shape lesson. This Pre-K color by shape worksheet gives each row its own rule. In row one, the circles turn blue. In row two, the squares turn orange, then the triangles turn green and the stars turn yellow. Each row also holds one or two shapes that stay white. So the child cannot color everything and must check each outline first. In total, twelve shapes wait for a crayon, which makes the page good coloring practice as well.