This product contains 6 quizzes for Investigation 1 and 2. Investigation 1 has only one quiz, but Investigation 2 has five quizzes. The first part of all the quizzes is matching, and second part is true/false. These are easy to grade, and a good way to get some extra grades. Answer keys are included with each quiz. The length of the quizzes range from 12 to 14 questions. Most have 14.