An instructor is teaching a class that is using new course material developed since the last time the course was taught. Which of the following is the BEST method of evaluating whether the new material enhances learner ability to meet course objectives?

A.
Ask the learners in the class whether they found the material interesting.

B.
Compare attainment of course objectives by learners using new materials with attainment of those objectives by previous classes.

C.
Compare the learner evaluations of the instructor’s performance using the new materials with learner evaluations of instructors in previous classes.

D.
Carefully observe the learners’ in-class reactions to the new materials as they are introduced by the instructor.