In this lesson, students are working on their third revision related to heat transfer, focusing on the calculation of heat energy. They will conduct an experiment using three identical containers filled with water to measure temperature changes over time, emphasizing the importance of having the same water volume in each container. The lesson also covers concepts such as conduction, convection, and how different colors of containers (black, silver, and white) affect heat absorption, with black being the most effective. Finally, students are tasked with plotting their findings on graph paper to illustrate the temperature changes recorded during the experiment.