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Day 2: Writing and Interpreting
Chemical Formulas & continue PT Assignment
-The building of
the Red River Cart
-The components of the Lego Man Molecule
-Students go to the library and continue periodic table assignment |
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Building the Red River Cart
Molecules are
comprised of specific amounts in exact numbers. This is similar to many
of the things we see around us. It reminds me of the Red River cart I
assembled for Mosaic this year. I am a member of the Aboriginal Kin Club
and we hosted the Aboriginal Pavilion.
The Red River cart History is listened to on audio tape
http://cado.ayn.ca/lyle_story8.asp:
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"The Red river cart was a European cart. Actually
it came to Canada and the Metis were the ones that first started
rebuilding the cart, because the cart that was used for hauling
across the rugged land and it could take a pretty good beating and
it was something that was terribly easy to make backing the old
days.
Its just a matter of knocking down a tree and
putting the different pieces together and a lot of times when the
carts were made they were never used nails or anything like that,
what they used to do was grove the different spokes into the
wheels and that kind of stuff. So nothing, no nails were used or
anything like that on a cart back then."
-Lyle Donald
Métis story teller |
The Red River cart has three specific
components. Two wheels, a box, and a axle. The students look at the
model of the Red River cart. It is pointed out how this is a part of the
Métis culture and that to have a true Red River cart these specific
parts must be present in that exact amount. If you take a wheel away,
you do not have a Red River cart...it would not travel too far. If you
added a canopy, you would have created some sort of buggy, not a
traditional Red River cart.
If we were to symbolize the components as follows;
box = Bx
wheels = Wh
axle = A
The formula for a Red River cart could be expressed as;
BxWh2A
The formula tells us that our Red River cart has one box, two wheels,
and one axle.
Then a question is then posed to the class, How could I most
simply write the formula for two Red River carts? for five Red River
carts?
Components of the LegoMan Molecule
Start with the dissection of a Lego man. Set an operation situation,
have a tape recorder going "beep, beep, beep" time it so when you remove
the head a long "beeeeeeep" plays on the recorder. Establish with the
class what the component of the lego man are. Together create a formula
that could represent the components of the Lego man if he were a legoman
molecule.
Pose the question, what would the formula look like if we had
multiple legoman molecules?
Close by telling the students we will move on to
identification of components of true molecules tomorrow.
Students are released to the library
to work on their element presentation and visual aid
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