Introduces the science concept of investigation through the use of simple rebus sentences, a rhyming story, and everyday examples. Includes a glossary.

Investigates use of sweepstake promotions, their fairness to both contestants and small businesses, possibility of fraud (including mail fraud), and impact of promotional mailings on postal system. Includes results of evaluation of contests conducted, and examples of promotional materials, v.1; Includes responses to committee questionnaire on sweepstakes practices from companies using sweepstakes promotions, v.2.