Identify the type of research design interactive game. Below is a list of several research studies. Identify the type of design being used.

A study investigating whether a new teaching intervention improves writing scores on a state-administered standardized test. The study uses two fourth grade classrooms at a local elementary school. One class is the program group, and the other is the control group. (NEGD)

A study investigates whether a new teaching intervention improves writing scores on a state-administered standardized test. Last years scores on the standardized tests are used to assign students at a local elementary school to either the program group or the control group. Those students who scored lowest are assigned to the program group. (RD)

A study investigates whether a new teaching intervention improves writing scores on a state-administered standardized test. Two classrooms in a local elementary school are used in the study. One is given the program, and the other does not. Both groups are pretested twice. At the end of the year, the groups are tested a third time. (The double pretest design).