Gas Laws Manipulative - something I learned from another AP chemistry teacher years ago. Continuing the tradition of instructional sharing - I passed on the trick to a group of chemistry teachers today. Cover the variable that is constant (in the problem) and observe the relationship between the other two variables. #chemistry

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Hey, I found this really awesome Etsy listing at

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384 Free teacher training videos for chemistry teachers. Watch as 20 master teachers perform hundreds of amazing demonstrations, and also learn how to incorporate these activities into your classroom. Free write-ups are included with each video.

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Chemistry Cat I'm quite certain my High School Chemistry teacher taught us a significantly more complicated and senseless mnemonic wherein one knows anions are negative because the second letter of anion is "n" and the first letter of negative is "n."

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