Using a handheld 4-function or scientific calculator can save time. There is nothing wrong with the existence of calculators. The problematic part is their perv

Using a handheld 4-function or scientific calculator can save time. There is nothing wrong with the existence of calculators. The problematic part is their pervasiveness in school. Spending nontrivial amounts of classroom time on practicing using a handheld calculator is a waste. Assigning high school students long lists of exercises where they punch numbers into calculators and then write down the answers is a waste of time and attention.