Which set of words is most effective for teaching structural analysis?

The most effective set of words for teaching structural analysis is comprised of terms that exhibit a clear relation to prefixes and suffixes, which allows students to understand how these elements can modify base words.

In the set of words provided, "pretest," "retest," "tested," and "testing" all share the root word "test." Here, students can analyze how the addition of prefixes (like "pre-" and "re-") changes the meaning of the base word and how various endings (such as "-ed" and "-ing") indicate different forms of the verb. By focusing on these morphological elements, students can enhance their decoding skills and improve their comprehension of how words are formed and understood within the context of language.

This approach is particularly effective in building vocabulary and reading skills, as it encourages learners to break down words into their constituent parts, making it easier for them to grasp the meaning of unfamiliar words.