Frank appoints Sue and Todd tutors for the rest of the class. He gives them a preview of an upcoming exercise involving Todd's fish story (see Quotes in ""Being Positive About Signed Numbers""). The action shifts to a restaurant, where Todd reminds Bill of the systematic order of operations. It boils down to the acronym SCMAD (Simplify problems in parentheses, Compute powers and roots, Multiply and divide, Add and subtract, Divide the denominator). In the classroom, Sue tells Martha about square roots and the Pythagorean Theorem.