Present your child with a word problem that requires a single mathematical operation (addition, subtraction, multiplication, division, for example.) After reading it over, ask your child to draw a picture that indicates what to do. For addition, two groups of items might be circled together. For multiplication, several groups of the same-size sets might be circled together. For subtraction, the original number of items might be represented with circles and the required number crossed out, leaving the remainder. For division, items might be re-grouped into same-size sets until the original group is completely re-sorted. Then ask your child how he/she “knew” what to do. Discuss other examples of problems that can be solved in the same way.