Harold is a teacher who believes that education should get back to the basics of math, English, science, and history, rather than teaching other types of courses. Harold is most likely a:

Which of the following contributes to increased age-segregation?

A) extracurricular activities B) child labor laws C) middle and high schools D) all of the above

Dr. Widner is studying children's physical size worldwide by comparing the size of 8-year-olds in several countries, including Burma, Vietnam, Australia, the United States, and Canada. Dr

Widner can expect to find around a _____-inch gap between the smallest and the largest children. A) 3 B) 5 C) 7 D) 9