...Root is reverse exponentiation: square root(16) = 4 because 4^2 = 16, or 4 x 4 = 16. Rest is memorizing priority of operations (operator precedence).
I will also want to teach students the idea how important it is to be correct, even precise, in working situations, and when not to do so under other social situations, so that they can be well-rounded individuals. Thank you for your time. (read more)