This document provides a detailed lesson plan for a Grade 3 science class on the three phases of matter: solid, liquid, and gas. The lesson plan outlines the teacher's activities in instructing the students and the students' participation. It includes introducing the key concepts of each phase, providing examples, having students identify examples, and an activity worksheet for students to determine if examples are solid, liquid, or gas. The overall goal is for students to understand and be able to identify the characteristics of the three phases of matter.