Atomic Mass: Introduction
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- เผยแพร่เมื่อ 7 ต.ค. 2012
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What is atomic mass? It is a weighed average of the different isotopes of an element. It is sometimes referred to as atomic weight, relative atomic mass, or average atomic mass. We look at how to calculate and determine the weighed average of elements using atomic mass units.
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I can't see the discription sir
I am a student working toward a PhD in science education. This is a great video - you use several techniques that have been shown to help people learn difficult material
1) define vocabulary in common language
2) compare and contrast (weighted vs. non weighted average)
3) build on/activate prior knowledge (beginning with average before moving on to weighted average and the use of the car analogy
4) use of multiple representations (illustrations, science terms, number sentences)
5) solved a simpler problem working toward the problem using isotopes
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