This document provides a lesson plan for teaching new vocabulary related to the topic of the Three R's (reduce, reuse, recycle) to a 4th grade class. The lesson plan introduces 12 vocabulary words related to environmentalism and sustainability. Students first learn the new vocabulary by writing the words in bold, matching them to pictures, and practicing pronunciation. They then play a running dictation game to reinforce the vocabulary. Finally, students check their pronunciation of words by looking them up online and evaluating each other. The teacher notes that the active learning approach was noisy but engaging for students.