Because Mathematical short-cuts are often traps. The student who learns to work fractions this way and never learns LCD will struggle in algebra and fail at calculus. The goal IS NOT to teach easy computation--we have computers and calculators for that. The goal IS to teach mathematical theory that can be generalized and used to learn more complex ideas. Reply
Mathematical short-cuts are often traps.
The student who learns to work fractions this way and never learns LCD will struggle in algebra and fail at calculus.
The goal IS NOT to teach easy computation--we have computers and calculators for that.
The goal IS to teach mathematical theory that can be generalized and used to learn more complex ideas.