Katerine Patricia Mosquera Mosquera taught a 6th grade English class about synonyms and antonyms. The students learned that synonyms are words with similar meanings that can be the same part of speech, and examples were provided like "beautiful" and "pretty". They also learned antonyms are words with opposite meanings, and examples given included "tall" and "short". The goal was for students to understand the concepts of synonyms and antonyms and be able to identify them.