Mr. Hembre, a seventh-grade teacher, is explaining an assignment. He notices two students passing notes to one another. While continuing to discuss the assignment, he moves toward the students and confiscates the written notes. Then he walks back to the front of the class, still continuing his explanation, and asks Karla, who is daydreaming, to answer a question.
This scenario best illustrates which one of the following classroom management skills?

A. Negative reinforcement
B. Withitness
C. Scaffolding
D. Planning for transitions

Dr. redbull conducts a study to determine whether her new energy drink children perform better on spelling tests. she randomly assigns children to one of two groups: group 1 receives her energy drink and group 2 receives water. she then gives both groups a spelling test and compares the results. which of the following is true about this study? a. group 1 is the dependent variable and group 2 is the independent variable. b. this is a correlational study. c. group 2 is the experimental group. d. the independent variable is the type of drink the children receive.