Lesson 3

An Alarming Idea: Designing Alarm Circuits

Representing Circuits / Grade 4 / Lawrence, MA

The EIE Curriculum

EiE - An Alarming Idea: Designing Alarm Circuits Lesson 3

Students perform controlled experiments to identify conductors and insulators and practice drawing schematic diagrams.

Reflection Questions

What steps does George take to help his students become familiar with the symbols of schematic diagrams?

Before being asked to create a schematic circuit diagram, George’s students are given various opportunities to practice translating pictures into symbols.

  • George starts by presenting a sketch of a battery, a light bulb, and a wire and has students cover each picture with the appropriate schematic symbol. (1:40)
  • Next, George has students practice drawing the six schematic diagram symbols on handout 3-1. (5:18)
  • Finally, students draw a complete schematic diagram based on pictures. (6:32)

Where do you see references to the storybook providing context for the day’s engineering activities?

George and the students refer to the storybook as evidence to support the ideas they are sharing.

  • When asked why someone might need both a buzzer and a light to go off at the same time, one student uses the story of Emily’s friend Pete working in his shed as an example. (5:54)
  • At the end of the lesson, George suggests sending a letter to Emily that explains the solution they come up with so that she can enjoy the summer riding her horse. (8:28)