Tue Mar 22, 2011 3:30 PM
Variable Biochemical change in the Environment
ON the surface it appears to be about the ripening and death of fruits and vegatables. However, I believe if one reads the article over a second time, and preforms the actual lab, yeu will realize that the articel can apply to many aspects of change in the environment related to why certain plants do not bloom or reproduce when they should, or die out when the environment they exist in goes under variouis stresses.
1st) A nice connections is made withe the four variables to plant physiological change. They are:
a) Concentratins of atmospheric gasses - (This alone requires extensive study, and can be made into numerous scientific inquiries.
b) Disease. Also diseases form other plants can place stress directly on a target plant or..place sturess on a different plant that has shared symbiotic microbial connections, thus indirect affects.
C) Temperature. (This is the only obvious variable)
D) Plant hormones in lesser or more concentration. This of course can relate directly back
Sun Mar 20, 2011 4:35 PM
Classifications of Basic Chemical Entities
This interactive activity attempts to explain the periodic table from a HIstorical Perspective. I believe this is a little weak. In fact the only weak part of the activity. Why, a key element that can be applied in a major way across the major sciences namely Biology, PHysics, and chemistry, is OXYGEN. There is a great story line in its' discovery. Namely the co-discovery of Lavoisier and Priestly. And, how the story of HOW they discovered it. However, the aspects of two interactive videos, followed interwoven with superior pictures, with some shown on an interesting chemical activity are superiior, and interesting. Within this activity can be found mumerous expample of good science. Example, the predictiion of future elements my early scitentists is excellent. Further, there are good questions for review, as well as constant inquiry questions for reflection, a summery, and quiz at the end. Finally, I thought the Point and click Glossary at the end should be included in all of my lesso
Sat Mar 19, 2011 7:10 PM
Chemical Reasctions: The Initial Energy
This was an exeptional interactive inquiry. I believe it can be used in HIgn School for 9th grade Physical Science, and for 11th Grade basic Chemistry. The interactive graphs were colorful, easy to use, and expalined well. I especially liked the section that used Fe + CuCl2 yields FeCl2+Cu.
NOt only can this formula be use throughout the lab activity (virtual Lab activity) it also shows one of the ways one can smelt Copper, which I do not think was mentioned. This is a great lab.