1. The lesson plan aims to teach students about ecosystems, including identifying producers, consumers, and decomposers; defining ecosystems; and analyzing food chains and webs. 2. Students will watch videos about ecosystems, food webs, and food chains, discuss ecosystem models in groups, and participate in a quiz bowl game to test their understanding. 3. The lesson is designed to help students understand the composition of ecosystems and their importance to human life through hands-on group activities using videos, models, and games.