In this ESL lesson plan for adults and teens, students watch an informative video and do a listening exercise on heatwaves. It includes discussion questions and conversation activities about heat, heatwaves, temperature, and natural disasters. Students also learn some important vocabulary terms and phrases from the video. The post-viewing section includes follow-up discussion questions and an activity on rewriting sentences using vocabulary that was used in the video. The grammar section features the usage of the comparative phrase "not...as + [adjective] + as". There are additional grammar follow-up activities included, as well as a quiz and review section.