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Designing Alarm Circuits

How do electrical circuits work? The lessons in this unit will get students thinking like electrical engineers, starting with the storybook A Reminder for Emily, about a girl living in the Australian outback who needs an alarm to remind her when it’s time for chores around the ranch. The hands-on activities in this unit reinforce science concepts including conductors and insulators, schematic diagrams, and circuits. For the final engineering design challenge, students plan, create, and improve their own alarm circuit.