Reflection: Safety Build a Lightbulb - Section 2: Independent Practice


When students connect the nichrome wire to their completed circuit, the filament will begin to transform the electricity from the completed circuit into heat and light energy. This is an exciting process for students to witness, but can also be a safety hazard. The nichrome wire gets extremely hot and can burn students if they touch the wire. To address this safety concern, I review of our science safety contract prior to the lesson.

At the start of the year, before introducing any lab work, I guide students in the creation of a code of conduct for science labs. Using the code they created, I generate a science safety contract that both students and their parents sign. Since students generate the code of conduct, there is a good deal of ownership and students hold one another accountable for safe lab behavior. A periodic review of this safety contract reinforces my expectations regarding classroom safety and makes clear to students what kind of behavior is acceptable. 

An example of a student generated safety contract can be found here

  Safety: Filaments and Classroom Safety
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Build a Lightbulb

Unit 2: Electricity
Lesson 6 of 11

Objective: SWBAT construct a model light bulb and describe the flow of electricity in their light bulb circuit.

Big Idea: A light bulb transforms electrical energy into heat and light energy. The light bulb was designed to meet human needs.

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