There are some specific areas of mathematics that give particular difficulty. Here are some of them and some suggestions for how to deal with them. Sometimes students do not understand underlying concepts. Area, perimeter, measurement, addition, subtraction, multiplication, division, decimal fraction, place value, and mixed fraction are concepts that may not be understood.
Computation is stressed at the expense of understanding the underlying principles.
The best procedure is to illustrate the concept with models or objects in a variety of ways. Examples and counter-examples are both important in concept development. Real world applications help to develop understanding. Sometimes the student may understand the concept, but may not remember the name or label that goes with it. Using examples from the student's experience will help him understand.