This document provides an overview of a 4th grade science lesson on heat transfer. The lesson objectives are to understand how heat can change the state of matter, identify conduction as a property of matter, and recognize that heat is transferred through conduction, convection and radiation. The lesson defines heat as the transfer of thermal energy, and explains the three methods of heat transfer - conduction occurs through direct contact of particles, convection is the transfer of heat by moving fluids like air and water, and radiation transfers heat through electromagnetic waves. Examples of each type of heat transfer are given.