The advantages of coloring pages:
1) Self expression - coloring on a blank "canvas" (paper), is a way for kids and grownups alike to reveal themselves. You can tell a lot about the method an individual is feeling by the images that they draw, the colors that they utilize, etc. It is necessary to give kids a possibility to reveal themselves, and not all kids reveal themselves through words and through writing, many usage art.
2) Color recognition
3) Therapy - for many individuals (myself consisted of) coloring is healing. Despite whether it's doodling, or coloring the "best picture ever", coloring can be a way to de-stress, after a busy morning of school work, wind down, and calm down, after the stresses of a day at school or work.
4) Grip/Control - many kids find out how to hold a pencil, pen, marker, or colored pencil, by very first knowing how to hold a crayon. The small muscles required for penmanship later start to be developed while coloring.
6) Structure motor skills
7) Focus - Taking notice of a single task for a length of time is needed for coloring and for all sorts of things throughout one's life.
8) Borders - Another thing that kids learn from coloring pages, with preprinted images on them, is how to accept borders. While a toddler or preschooler might scribble all over a coloring sheet, without any respect for the borders (lines on the coloring page), as the kid ages, they will start to respect those lines, and make an effort to color in between them. While I motivate blank paper coloring totally free expression as often as possible, for many young children pre-printed coloring pages are their very first direct exposure to printed borders. This early direct exposure to borders in print, will be a huge assistance when handwriting time happens, and the kid needs to respect the borders of the preprinted handwriting lines on the paper.
9) Turning point - This is the last little "importance" of coloring that I will mention in the meantime, and that is that coloring in the lines is a turning point, a sense of achievement, the first step towards a successful academic career for many kids. For many kids coloring in the lines is just as important as counting to 10, counting to 100, reciting the alphabet, finding out the reproduction realities, etc. It's a turning point that states "yes I can" do whatever I discover, and it provides kids with pride, a sense of self worth, and assists them to feel accepted in a society that is often quick to judge, and slow to react. This sense of achievement will bring them through life, and assist them not to quit so quickly, when something new comes along.