One reason that today's preschool teachers don't emphasize to their children that they must color within the lines of a coloring book (as teachers did a generation ago) is that a. large-muscle control is necessary for this activity. b. preschoolers don't like the structure of a coloring book. c. preschoolers have problems with this type of coordination. d. it is considered creative to color outside the lines.

The educational system today have already evolved where preschool teachers do not anymore emphasize to their children that they must color within the lines of a coloring book because it is already considered creative to color outside the lines. Students are now push to innovate and create ideas to break the barriers of controlling their capacity of creation.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.