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This FUN and ENGAGING NGSS middle school STEM lab investigation challenges students to design their own experiment and gather evidence to prevent pennies from going through a chemical reaction and can be used to meet the Next Generation Science Standards Performance Expectation MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
In this 2-3 day inquiry-based and engineering lesson, students design an experiment and test coatings to determine which would prevent the corrosion of shiny, new pennies the best! You can provide more or less scaffolding depending on how well your students can design their own experiment! It should be taught after learning the differences between physical and chemical changes/reactions.
Lesson Overview. Students:
Ideas for discussion are also provided. In the conclusions, students are asked to reflect on the experiment as to what worked, what didn't, what they would revise, why they used a "control penny" and the costs and benefits to each of their coats to relate it to the real engineering process! My students loved this lab!. It's a great introductory lesson on how to write and design an experiment as well!
It aligns with the following NGSS Next Generation Science Standards:
MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
MS-ETS1-1. Define the criteria and constraints of a design problem with sufficient precision to ensure a successful solution, taking into account relevant scientific principles and potential impacts on people and the natural environment that may limit possible solutions.
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