Sunday, March 20, 2011

The Polar Ice Cap Conundrum

As I have been working through this experiment, I find myself in the typical position of a scientist.  I have ended up with more questions than I originally thought.  As of right now, I do not believe that the melting of the polar ice caps will cause worldwide flooding.  The destruction of habitats and the disruption of many species seems like a given, but I do not think there will be flooding.  Water is a unique substance.  When it freezes, its volume increases thus decreasing the density thereby enabling the solid form to float on the liquid form.  If the polar ice caps are floating within the ocean, melting should actually decrease the water level due to changing volume, not mass.  However, I do have questions.  

  1. Not all ice is located in the water.  Would the melting of the ice that covers the land be enough to increase water levels?
  2. Does the ice covering the land push the land down and have any effect on ocean levels?
  3. Am I completely and utterly wrong about what I am basing my hypothesis on?
I am curious to see if my hypothesis is valid.

Sunday, March 13, 2011

A Reflection on the Moon

My PLT has been using 5 E lessons for almost two years.  Our district provides up with a curriculum map and lesson plans for every unit, so we would take these resources and build on them.  I call this resource our "cookbook" because it is full of different "recipes" or lessons.  In other words, it provides us with a base.  I have never been one to leave well enough alone, so I am constantly perusing the pantry and cabinets looking for something else to throw in the pot.  I tend to be the exact same way with the provided lessons!

The lesson plan that I created for this week's application focuses on the phases of the moon and is one that I have already used (but with some new additions or "spices").  Instead of just having the students do the light-source-Styrofoam-ball demonstration, I wanted to include technology and a more student-driven aspect.  When I implement this new lesson, I may have some difficulty getting the room dark enough for my students to be able to see their moon phases.  I also worry about issues with the Flip video cameras, but both problems can be easily solved or taken care of before implementation.  I think that pre-planning something helps alleviate issues and stress thereby making lessons much more effective.  And if something does go wrong, that what first period is for-try it, fail, change it!  

Saturday, March 5, 2011

Welcome!

This is my first blog post ever, and I am really excited about sharing experiences with my fellow science educators!