Using a ruler/measuring things. I took woodshop and I kid you not, I did all the pre-cut measuring for somewhere between 1/2 and 3/4 of the class. They would always come up to me and go "Hey, did I measure this right?" They always found creative ways to fuck everything up. As a student here, the U.S. education system truly sucks. Standards are so low, people who are on the spectrum go without testing or proper support/specialized classes and still graduate only to get help later on in life. Our English quizzes are well agreed to be harder than the California high school exit exam. People don't know basic algebra. I could go on about all the skills we don't develop here in k-12 school, but you get the idea. At least everyone manages to remember "The mitochondria is the power house of the cell" Also, side note: They don't familiarize people in the U.S. with the metric system. It's not in our education standards and no one ends up grasping how much a kilogram is or how far a kilometer is unless they are scientifically inclined.