Sunday, February 19, 2012

week 4 transfer of heat

Heat transfer experiment:
I chose a variety of household materials, some of which I was sure would make good insulators and others that I was surprised by.  Thinking back, the aluminum foil would not have made a good insulator, as it is a good conductor of heat; allowing heat to move through it, not containing the heat.  The fleece blankets made the best insulators, which made the most sense, as that is what we use as our bedding to keep us warm at night.
In order to set up a similar experiment for students, I would tell them that they are clothing designers and they have clients in Alaska and in the Bahamas.  The different clients have different needs, although the same information could be learned from one experiment.  The Alaskan clients need to know what materials make the best insulators, whereas the Bahaman clients need to know which materials will dissipate the heat the quickest.
I enjoyed the transfer of heat experiment.  I know that if I put it in a real-world context of clothing designers, the students would enjoy learning the concepts of thermal transfer or dissipation.  Anytime a science concept can be applied to a real-life experience, students tend to make more connections with the science concepts.

week 6 - elements and the periodic table

I chose to investigate the periodic table of elements for this week’s blog.  As a teacher of elementary students, this is a concept that I have found to be difficult for them to understand.  There is such a great deal of information on the periodic table of elements in regards to how compounds are formed, elements react and combine, yet because we cannot see exactly what is happening, students have a difficult time grasping these abstract concepts.
During an internet search, I found the following resources to use in my classroom with my students.  There are interactive games to show how elements react, molecules and compounds form, and chemical reactions.  It also provides reproducible activities.  Some of the sites also include videos for the students to use.  I found them easy to navigate and user-friendly.  I believe that my students will enjoy their explorations.
These interactive sites allow the students to explore on their own during 2, maybe 3  computer lab periods.  With individual exploration time with a partner, students will be able to play the games and view the interactive portions of the sites at their own pace.  These tools will help students become literate for the 21st century because they are web-based resources.
One challenge that I may face using these resources for my students is the internet sites themselves.  Our district tends to “block” so many sites from our students, even educational sites, that it is sometimes a challenge to take them to the lab.  Computers are not always working or software updates have not been completed.  We do not have a computer lab tech, so we are at the mercy of the district lab techs to take care of the site labs for us.  One more casualty of the California budget crisis.

Interactives: the periodic table
Element/Periodic Table Games and Quizzes - interactive and printable
matter, elements, atoms, reactions, biochemistry, and activities