This document is a 20-minute lesson plan for a Grade 4 English class on using dictionaries, thesauruses, and online resources to understand word meanings. The lesson defines dictionaries and thesauruses, explains their parts and purposes, and demonstrates how to look up words using each. It encourages students to practice looking up 10 unfamiliar words using these reference tools. The lesson is delivered over the radio by Teacher Joyce to educate students about word meanings.