This PowerPoint presentation teaches students how to identify parts of speech in sentences using the pen tool in PowerPoint. It provides examples of sentences and asks students to underline specific parts of speech - nouns, verbs, subjects, and predicates. The answers are then revealed for each set of examples to check the students' work. Students are instructed how to access the pen tool and are guided through underlining nouns, verbs, subjects, and predicates in turn through multiple example sentences.