Here’s a strong write-up for — likely referring to Activity 1.2.3 in a PLTW (Project Lead The Way) course, most commonly from Principles of Engineering (POE) or Introduction to Engineering Design (IED) .

The primary goal of Lesson 1.2.3 is to introduce students to the fundamental principles of electricity and circuit analysis. Before this lesson, students typically explore broad energy sources; in 1.2.3, they zoom in on how electrical energy is generated, stored, and distributed.