This lesson plan introduces grades 6–8 students to the 12 principles of green chemistry, emphasizing how these principles shape industrial product development and affect everyday life. Students first restate each principle in their own words, then research whether a commercial household cleaner upholds those principles. Through collaborative brainstorming and a hands-on lab, students create their own environmentally friendly cleaning products using common materials such as vinegar and baking soda. They compare the effectiveness of their homemade cleaners against commercial products and reflect on both the benefits and limitations of the green approach. The lesson aligns with Massachusetts Science Curriculum Framework standards for grades 6–8 and addresses all twelve green chemistry principles.
Title: It's Not Easy Being Green: The 12 Principles of Green Chemistry
Educational goal: To understand how the principles of green chemistry affect students' daily lives and the products they use.
Student objectives: Students will understand and apply the 12 principles of green chemistry.
Time required: Three days — covering research, brainstorming, and a final lab session.
National standards met: S1, S2, S6, S7
Green chemistry principles addressed: 1–12
The 12 principles of green chemistry are highly relevant to the ways in which they shape the industrial development of new products. As summarized by the American Chemical Society, the principles counsel that:
The Massachusetts Science Curriculum Frameworks specify that students in grades 6–8 should be able to:
"Required materials and teacher prep steps"
Teacher prep: Teachers should research the dangers of common commercial household cleansers before introducing the lab. Resources on green chemistry from the U.S. Environmental Protection Agency can help contextualize the risks and benefits of conventional versus environmentally friendly cleaning products.
Materials: Vinegar, baking soda, bleach, and common household cleansers.
Time required: Three days — three days of research and brainstorming followed by a lab day.
The lesson unfolds over three sessions as follows:
12 Principles of Green Chemistry. (2011). ACS: Chemistry for Life. Retrieved August 21, 2011 from http://portal.acs.org/portal/acs/corg/content?nfpb=true&pageLabel=PPARTICLEMAIN&nodeid=1415&contentid=WPCP007504&usesec=true&securlvar=region1&uuid=2f4c5745-8764-429d-a265-aa34a6d719e1
"ACS and Massachusetts curriculum citations"
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