This document provides an outline for lessons on the topic of chemical equilibrium. It includes: 1) Four lessons that cover investigating equilibrium reactions, determining equilibrium constants (Kc), using the ICE method to solve equilibrium problems, and the relationship between Gibbs free energy (ΔG) and equilibrium. 2) Details of activities and assessments at various levels for each lesson, including determining Kc values, using ICE to find equilibrium concentrations, defining Gibbs free energy, and relating ΔG to Kc. 3) Examples of ICE questions to work through in class covering determining Kc from concentrations, finding concentrations from Kc, and cases where Kc is very small. 4) A discussion of