1. The radio program discusses a lesson for 4th grade English on identifying meanings of unfamiliar words through analyzing word structures like prefixes and suffixes. 2. The program reviews the previous lesson before introducing the new topic on identifying word meanings from their prefixes and suffixes. 3. Examples of words with prefixes and suffixes are provided and the students are guided to determine the meanings from the structural analysis. The students are then instructed to continue their exercises in their modules.