This document outlines a two-part lesson plan on ecology for a group of 30 first-year bachillerato students aged 16-18. The plan focuses on recycling, reducing, and reusing materials. In the first part, students brainstorm ways to categorize environmentally related words and research recycling methods in small groups. In the second part, each student explains how to reuse a material and the group creates a Prezi presentation, then an online test evaluates students. The goal is for students to understand how to be better caretakers of the environment.