Because calculators do all of the work for the student he/she will not be  stimulated or challenged enough  . both report and article expose to this which is not true at all  Calculator only do the low level tasks of computation they don`t think  calculators can speed up the leaning process calculators permit student to work enough problems to discover and observe patterns in mathematics student will also be able to focus on useful particular applications  for theories and concept they learn in class which is absolutely true.  This myth is not true at all because as the report say calculators do the low level task of the math problem and instead accelerate their work and  it let them achieve.