What Is Mass? (pg103)
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After utilizing my “It’s not just a Sunday ritual for Catholics!” joke, we started off with a discussion of the term mass. We defined it as “the amount of matter in an object.” I like to explain that if you were able to chop up an object and count up all of the individual atoms, that would give you an idea of how much mass that object has. After the definition, I showed some examples (baseball vs. Styrofoam ball). We discussed how mass is slightly different from weight. Then we talked about how to measure mass and what units scientists use. For the last half of class, students practiced using a balance to measure the mass of various objects in grams, kilograms, and milligrams.