4/5/13

Playing with polymers...

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Today we learned that ATOMS are the basic building blocks of everything you can see around you, and sometimes even things you can't see, like the air that you breathe.

Atoms are so very small that there are millions of them hiding inside the tiniest speck you can see.

Atoms can join together - they form bonds together - to make MOLECULES
Let’s pretend you and your best friend are atoms, to make a bond you would hold hands and become an ELEMENT!

Those elements join together in a large molecular conga line.

POLYMERS are groups of molecules that are connected to create something you can touch and feel with your hands and see with your eyes. Polymers can be natural, like those that make up the trunk of a tree, or they can be man-made, like plastic.

We used three students as an example of atoms and elements. I had them hold hands to make a molecule, joined the molecules to make a polymer and put one of my smallest students on top of all their joined hands to show them that polymer bonds are STRONG.

Then we made GAK:

We will need:

1 cup of white glue

1 cup of water

1 cup of warm water

1 1/2 tsp. of borax

Mix glue and water in one bowl.

Mix borax and water in another bowl.

Pour glue mixture into borax mixture and stir.

This opened up some great conversations about liquids and solids and changes in state. My firstie are SO SMART!