In order to communicate new and sometimes complex concepts to students, it is important to present information in a variety of formats for the individual learner: visual, auditory, kinesthetic, etc. Asking students to apply their new knowledge in a context that they can understand demonstrates the acceptance of the new information within their own construct, their own perspective.
Race is an oversimplification of physical attributes where culture embroiders art, food, language, customs and traditions. Many cultures may be present in a student group, so it is important to assess for understanding of new or complex topics to verify that the information was processed, non-biased and absorbed.