Sunday, March 29, 2015

Science and Engineering Fair 2015: It Starts with a Question

One of our highlights of the year is our annual Science and Engineering (new this year!) Fair. Each Navigator started with a question and then proceeded through the scientific method. It was so fun to see the varied passions, giftings and personalities and to learn so much from each other. A big shout out to parents and grandparents who supported the children in their scientific endeavors. And congratulations to those who went to the South Sound Regional Science and Engineering Fair! 


 

 

 



 

  
 


Monday, March 16, 2015

Dome Building: The Gumdrop Challenge

The Challenge: Imagine you are a structural engineer 
and you must design and build a structure 
that can hold the most weight 
using only gumdrops and toothpicks.


We started with square shapes:


We added books and quickly discovered that square shaped structures fall over easily. 



We then moved on to triangles and combos of triangles, squares and diamonds. 
Although these shapes bore more books, they also fell over under a heavy load. 
 







The Navigators have been amazed by the innovations and abilities 
of the Renaissance people we have been studying.
So naturally, we wondered how in the world did Filippo Brunelleschi build the Duomo in Florence?!
We watched a short animated video on how he might have built his dome  
and experimented with egg shell halves.

We discovered that the dome shape of the shell halves are very strong. 
We added more and more books until the eggs broke.
Thirty-seven books is the classroom record!


Our scientific drawings, observations, conclusions:



Drawings of the Brunelleschi's dome:


This student went online to find the statistics for the dome which he shared with the rest of the class. 

Drawings of egg shells holding books. 
The bunny was the straw that broke the camel's back. :)



 I sent home a link to the Nova documentary called 
"Great Cathedral Mystery."
Several families reported that they really enjoyed it. 
What a privilege and a pleasure it is to teach engaged, enthusiastic children!


Saturday, March 14, 2015

Leonardo da Vinci Meets George Lucas

The Vitruvian Man shows up yet again!

Super Cool Science

The community of Seabury school has so much to offer each other. Recently, one of our moms, an Evergreen State College professor, brought in some dry ice and some liquid nitrogen and did some super cool science experiments relating to the states of matter. 
We explored some of the properties of dry ice (frozen carbon dioxide) with its interesting property of sublimation, changing directly from a solid to a gas without becoming a liquid. 

We froze bubbles.

We listened to the reverberations it made
as it sublimated in a stainless steel bowl.
Chuckle, chuckle!

After being frozen with liquid nitrogen, we hammered nails with frozen bananas and cucumbers.

We tested rubber balls and found that the one frozen with liquid nitrogen became too dense to bounce.


We each got to freeze a flower in liquid nitrogen and then crumble up its petals:





We made and enjoyed liquid nitrogen frozen ice cream:



We eagerly watched as Ms Toska 
released the extra liquid nitrogen 
onto the playground:


Another super cool day of science spent as real scientists 
exploring, experiencing and discovering 
our world around us! 
Thank you, Toska, and your students Jasmine and Amanda!!