Frost Flowers and walking ferns

Tomorrow, we will have our even class day so we will have our regular Selected Topics day.  We will be working on our pHET simulation physics software.  Link below if you want to take a look.  The sims we will be working on tomorrow will include the concepts of trajectory, force, range, speed and gravity.

http://phet.colorado.edu/

On Tuesday, we will be in AP Biology before heading out to Thanksgiving vacation.  We will wrap up our review of genetics and Crick's Central Dogma.

I was able to take a walk after church today.  Last night the low was 19 and today it barely got above freezing.  Took Chloe (John and Claire's dog) on a walk and was able to get some pictures of frost flowers.  Ribbons of ice form from thin cracks in the stem and as water moves up from the roots, freezes when in contact the air. I have seen several on my way to school about a week ago during a cold snap and today's (from stems of wingstem) were all in a small valley back of our house.  Also, walking fern (Asplenium rhizophyllum) in moss.

http://en.wikipedia.org/wiki/Frost_flower