A New Program Has Been Developed to Increase Students' Speed

A new program has been developed to increase students' speed and accuracy in simple mathematical computations. You have been asked by the school district's curriculum specialist to evaluate its effectiveness. One of the first decisions you must make is whether to use a group or a single-case experimental design. What questions could you ask the curriculum specialist about the program and the purpose of the experiment to determine whether a group or single-case design is more appropriate, and what is the purpose of each question?