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Wednesday, February 22, 2017

2/22/2017

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For our third day of enrichment focusing on customary (US) units of measurement, we shifted to weights (ounce, pound, ton).
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Block 2 Additional Warm-Up:
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https://learnzillion.com/lesson_plans/5615-compare-and-convert-customary-units-of-weight
In science I did a brief review of the notes on fossils and then did a demonstration on making fossils and then a cast.

Traditionally, the way to do this in the classroom is to first make an imprint in modeling clay and then pouring wet plaster of Paris into the imprint.  Plaster of Paris and modeling clay we have but the procedure would take longer than I would have wanted so I came up with an alternative:  Play-Doh and melted scented wax.  

First I coated the sea shell in corn oil to make it come out easier.  Then, after flattening the Play-Doh, I gently pressed the sea shell into the slab until its edges were even with the surface of the Play-Doh.  I then gently pried it out to leave an imprint of a "fossil."

Next, I carefully poured melted scented wax into the imprint.  After roughly five minutes, the cast has cooled enough to be gently pried out and voila!  It makes an almost perfect wax copy of the sea shell!  Friday I will do something similar and yet different.  

Also, I showed the class real insects encased in a resin to simulate "amber."
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  • Home
  • Information
    • Communication Archive >
      • What We Did Today
      • Older Communication Archive >
        • What We Did Today (2018-2019)
        • What We Did Today (Archived from Palisades Park)
    • Meet Mr. Miller
    • Specials Schedule
    • Homework
    • Calendar
    • End of Year Parent Satisfaction Survey
    • Behavior Expectations
    • Contact
    • Ask Dr. STEM
  • ELA