a little more progress…

got through a few more sculptures today- 13 to be exact. next week we’ll finish them off and get them painted black so the kids can apply the metallic patinas. this week i let some of the kids mix their own plaster which they enjoyed. they were trying to understand the difference between “drying” and “setting up” and why the plaster heats up as it hardens ……

When mixed with water, calcium sulphate hemihydrate, CaSO4·21H2O, also known as Plaster of Paris, undergoes an exothermic hydration reaction :

CaSO4·21H2O + 23H2O → CaSO4·2H2O

So basically, the hydration process throws off energy in the form of heat.

I have spent many years mixing plaster in my mold shop when running my porcelain studio and it was fun to see the kids enjoy it so much- just look at the smile-
DSC_1446.JPG
here they are getting ready to mix the next batch

DSC_1448.JPG
a rinsing bucket so none of the plaster goes down the drain and clogs it up….ask me how i know.

DSC_1449.JPG
sprinkle the plaster evenly over the surface of the water until little islands appear on top breaking the surface of the water.
DSC_1450.JPG
DSC_1451.JPG
they would have enjoyed just mixing plaster and nothing more!

overheard while working:

“i’ve never gotten dirty before!” (yikes!)

“oooh, i like the way it feels on my hands!”

“art is hard to talk about”

i swear, i’m gonna bring in a recorder soon and post some audio of what these kids say during art. it’s very revealing sometimes!

Technorati Tags: , , ,

Advertisements

Leave a comment

Filed under artists teaching art, LBUSD, Long Beach art, teaching kids art

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s