High school science teacher.
Sun, Sep 16, 2012 3:03 PM in Photosynthesis "Hook" or Discrepant Event
Adah: I also do that lab with the elodea sprigs. I love to see the kids expressions when I take out the test tube from the dark and they seem so puzzled with the color of the water. Then several "light bulbs" turn on and they figure out that plants also go through cellular respiration. This is something even adults don't realize that plants do. People usually associate plants with photosynthe...
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Sun, Sep 16, 2012 3:38 AM in Independent vs. Dependent Variables
Hi Rochelle: After I teach the kids about independent and dependent variables, we do a Control Lab with Lima Bean seeds. We test just one variable and they want to add more than one variable like your students. It's interesting to see how students of different ages and from different places experience similar challenges.
Thu, Sep 13, 2012 2:28 AM in Health and Society
Loren: I'm not sure what grade you teach, however, I'm currently teaching my 10th graders about the Cycle of Matter and the Energy Pyramid....with the 10% Energy Flow Rule. We also discussed how it would be more energy efficient if we ate lower on the energy pyramid. We just talked about a recent article in Popular Science about biofuel versus eating meat and the amount of energy needed to proc...
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Sat, Sep 24, 2011 1:38 PM Molecular and Cellular Genetics
If your students are visual learners like mine, this might be a great resource for you. Click on the Molecular and Cellular Genetics Theme, then click Structure of DNA, which will then take you to the http://learn.gentics.utah.edu site which has virtual tours of the following: 1) The Basics, 2) DNA to Protein, 3) Heredity & Traits, and 4) Amazing Cells. I was thinking of projecting this site and showing students the different vitual tours.
For the Cell tour, as you move the mouse around the cell, the different organelles are zoomed in and provides information about what it does and provides a simulation of the organelle in "action".
The Heredity and Traits tour explains and shows easy to understand visuals about heredity and traits and why siblings look similar and different from their parents.
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