This Smart Board lesson is a great way to review 21 economic terms. Each slide has a different question and the answer is covered up by a screen cover that slides down to reveal the meaning. Terms include:opportunity cost, scarcity, need, want, capital goods, capital resources, profit, labor, goods, income, services, supply, demand, goods, producer, consumer, natural resources, competition, and distribution. The final two frames review two sets of four words for students. Included are 5 e