We started the semester with ratios in the form of unit conversions, such as converting centimeters to meters. This was to get the students working on simple ma...
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...activity because it helped lead students to understand why chemical formulas are written a certain way. They needed to know that in CO2, there were two oxygen for every carbon and that when splitting the molecule, they would get twice as much oxygen as carbon. Dalton used similar experiments to build the first modern atomic model, which was our foundational principal at this point in the class. When we covered balancing equations we used the PHET Colorado website to visualize the atoms as we balanced them. This allowed the students to see what balanced meant on a molecular level. Balancing equations can be difficult for visual learners to comprehend, and using this simulation bridged that gap. Allowing the students who are not always the most willing to participate in the Smart board simulation increased buy in to the activity as well as understanding of the concept.
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