What can classroom teachers do to help children who have difficulty with computational skills? Some people may argue that teachers need not worry about computational skills because of the increasing availability of miniaturized calculators. Such an argument assumes that an individual will (1) know what operation should be used; (2) have the financial resources to buy hand calculators; (3) have a hand calculator at his fingertips every time he needs to add, subtract, multiply, or divide; and (4) be able to determine the reasonableness of an answer once it has been derived. These assumptions are difficult to satisfy. The development of basic computational skills clearly should not be neglected; it remains one of the objectives of elementary school mathematics programs.