1. Prior Knowledge

2. Each card has a letter on one side and a number on the other. Rule: If a card has a vowel on one side, it should have an even number on the other. What is the smallest set of cards one must turn over to check whether this rule is being followed? A.{ A } B.{ A, 6 } C.{ A, 7 } D.{ A, 6, M, 7 } AM67

3. Each card has a letter on one side and a number on the other. Rule: If a card has a vowel on one side, it should have an even number on the other. What is the smallest set of cards one must turn over to check whether this rule is being followed? A.{ A } B.{ A, 6 } C.{ A, 7 } D.{ A, 6, M, 7 } AM67

4. Each card represents a student at a bar. The age of each student is on one side and what he is drinking is on the other. Rule: To drink alcohol, one must be over 21. What is the smallest set of cards one must turn over to check whether everyone’s behavior is legal? A.{ 16 } B.{ Beer } C.{ 16, Beer } D.{16, Coke, Beer, 23 } 16BeerCoke23 Griggs & Cox (1982)