“The Definition of a Crystal and How We Use Them Daily”
Items Needed:
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(1) Redistribute students’ journals
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(2) Iced tea crystals or any crystals that student is familiar with to make soft drinks
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(3) Bath crystals or Ivory flakes
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(4) Grain(s) of table salt
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(5) Magnifying glass
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(6) Activity sheet on growing crystals will tell them all that is needed
LESSON OBJECTIVE:
The understanding that crystals are in our everyday living. The student, at the end of the lesson should:
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(1) be able to find at least three other crystals in his everyday use.
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(2) be able to understand that when we are talking about crystals, we are defining, specifically, about:
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a) solid matter
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b) has a symmetrical surface: where opposite sides, if placed on a dividing line, would be equal to both sides of the line. Examples are also in the grade 4th math book in the ‘89-’90 New Haven math books.
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c) is formed by the orderly, repetitive arrangements of atoms (atom: that which cannot be divided—in its smallest state).
Now it’s time to give the students the title to put on the cover of their entry journals which will be:
