In this lesson, students worked through the May 2017 Paper 1 past exam paper for physics, focusing on key equations and units. They highlighted the importance of showing calculations and writing units to avoid losing marks, discussing concepts such as density (M = ρV), pressure in liquids, moments (moment = force × perpendicular distance), and energy (potential energy PE = mgh and kinetic energy KE = 1/2 mv²). The lesson also illustrated unit conversions between grams per cubic centimeter and kilograms per cubic meter, emphasizing the significance of understanding these foundational concepts in physics.