Introduction to the Electric Grid – Bell Ringer

Summary

A three-prompt Bell Ringer that opens a unit on the electric grid by connecting students to the infrastructure already in their community. Students observe and describe real-world evidence of the grid, then reason through trade-offs in centralized electricity generation and the behind-the-scenes systems that make instant power delivery possible. Works well at the start of a high school energy unit or as a pre-reading activity before introducing grid fundamentals.


The electric grid is made of many stations and power lines that transport and distribute electricity to towns and cities. Describe at least two places where you’ve seen evidence of the electric grid in your community.

Most electricity is generated in large power plants far away from homes, schools, and businesses.
What is one benefit and one challenge of generating electricity in big power plants, and delivering it to our buildings through power lines?

Every time you flip a light switch on, electricity flows through the grid to power your light in real time. What has to happen behind the scenes to make that instant connection safe and reliable?