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grandchildren – n. the child of one's son or daughter
strategy – n. a careful plan or method for achieving a particular goal usually over a long period of time : the skill of making or carrying out plans to achieve a goal
craft – v. to make or produce (something) with care or skill
input – n. advice or opinions that help someone make a decision
trial-and-error – n. a finding out of the best way to reach a desired result or a correct solution by trying out one or more ways or means and by noting and eliminating errors or causes of failure
consistent – adj. always acting or behaving in the same way
hassle – v. to bother or annoy (someone) constantly or repeatedly
boundary – n. point or limit that indicates where two things become different
clock out – phrasal verb to record on a special card the time that one stops working
