The document contains two semi-detailed lesson plans for an 8th grade science class. The first lesson plan is about power and describes calculating power using the formula Power=Work/Time. Example problems are provided to teach students how to calculate power. The second lesson plan differentiates between potential and kinetic energy and explains the work-energy theorem. Students will identify and compare the two types of energy using a Venn diagram. Both lessons aim to teach students key concepts and formulas through examples, activities, and practice problems to evaluate understanding.